19904976

素因数分解:

$2^4\times 3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:79

約数の個数: 240

約数和(自身を含む): 72217600

約数和(自身を除く): 52312624

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 31, 36, 39, 42, 48, 49, 52, 56, 62, 63, 72, 78, 84, 91, 93, 98, 104, 112, 117, 124, 126, 144, 147, 156, 168, 182, 186, 196, 208, 217, 234, 248, 252, 273, 279, 294, 312, 336, 343, 364, 372, 392, 403, 434, 441, 468, 496, 504, 546, 558, 588, 624, 637, 651, 686, 728, 744, 784, 806, 819, 868, 882, 936, 1008, 1029, 1092, 1116, 1176, 1209, 1274, 1302, 1372, 1456, 1488, 1519, 1612, 1638, 1736, 1764, 1872, 1911, 1953, 2058, 2184, 2232, 2352, 2418, 2548, 2604, 2744, 2821, 3038, 3087, 3224, 3276, 3472, 3528, 3627, 3822, 3906, 4116, 4368, 4459, 4464, 4557, 4836, 5096, 5208, 5488, 5642, 5733, 6076, 6174, 6448, 6552, 7056, 7254, 7644, 7812, 8232, 8463, 8918, 9114, 9672, 10192, 10416, 10633, 11284, 11466, 12152, 12348, 13104, 13377, 13671, 14508, 15288, 15624, 16464, 16926, 17836, 18228, 19344, 19747, 21266, 22568, 22932, 24304, 24696, 25389, 26754, 27342, 29016, 30576, 31248, 31899, 33852, 35672, 36456, 39494, 40131, 42532, 45136, 45864, 49392, 50778, 53508, 54684, 58032, 59241, 63798, 67704, 71344, 72912, 78988, 80262, 85064, 91728, 95697, 101556, 107016, 109368, 118482, 127596, 135408, 138229, 157976, 160524, 170128, 177723, 191394, 203112, 214032, 218736, 236964, 255192, 276458, 315952, 321048, 355446, 382788, 406224, 414687, 473928, 510384, 552916, 642096, 710892, 765576, 829374, 947856, 1105832, 1244061, 1421784, 1531152, 1658748, 2211664, 2488122, 2843568, 3317496, 4976244, 6634992, 9952488, 19904976]

約数ペア:

[(1, 19904976), (2, 9952488), (3, 6634992), (4, 4976244), (6, 3317496), (7, 2843568), (8, 2488122), (9, 2211664), (12, 1658748), (13, 1531152), (14, 1421784), (16, 1244061), (18, 1105832), (21, 947856), (24, 829374), (26, 765576), (28, 710892), (31, 642096), (36, 552916), (39, 510384), (42, 473928), (48, 414687), (49, 406224), (52, 382788), (56, 355446), (62, 321048), (63, 315952), (72, 276458), (78, 255192), (84, 236964), (91, 218736), (93, 214032), (98, 203112), (104, 191394), (112, 177723), (117, 170128), (124, 160524), (126, 157976), (144, 138229), (147, 135408), (156, 127596), (168, 118482), (182, 109368), (186, 107016), (196, 101556), (208, 95697), (217, 91728), (234, 85064), (248, 80262), (252, 78988), (273, 72912), (279, 71344), (294, 67704), (312, 63798), (336, 59241), (343, 58032), (364, 54684), (372, 53508), (392, 50778), (403, 49392), (434, 45864), (441, 45136), (468, 42532), (496, 40131), (504, 39494), (546, 36456), (558, 35672), (588, 33852), (624, 31899), (637, 31248), (651, 30576), (686, 29016), (728, 27342), (744, 26754), (784, 25389), (806, 24696), (819, 24304), (868, 22932), (882, 22568), (936, 21266), (1008, 19747), (1029, 19344), (1092, 18228), (1116, 17836), (1176, 16926), (1209, 16464), (1274, 15624), (1302, 15288), (1372, 14508), (1456, 13671), (1488, 13377), (1519, 13104), (1612, 12348), (1638, 12152), (1736, 11466), (1764, 11284), (1872, 10633), (1911, 10416), (1953, 10192), (2058, 9672), (2184, 9114), (2232, 8918), (2352, 8463), (2418, 8232), (2548, 7812), (2604, 7644), (2744, 7254), (2821, 7056), (3038, 6552), (3087, 6448), (3224, 6174), (3276, 6076), (3472, 5733), (3528, 5642), (3627, 5488), (3822, 5208), (3906, 5096), (4116, 4836), (4368, 4557), (4459, 4464)]