20378904

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 192

約数和(自身を含む): 67415040

約数和(自身を除く): 47036136

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 31, 39, 42, 43, 49, 52, 56, 62, 78, 84, 86, 91, 93, 98, 104, 124, 129, 147, 156, 168, 172, 182, 186, 196, 217, 248, 258, 273, 294, 301, 312, 344, 364, 372, 392, 403, 434, 516, 546, 559, 588, 602, 637, 651, 728, 744, 806, 868, 903, 1032, 1092, 1118, 1176, 1204, 1209, 1274, 1302, 1333, 1519, 1612, 1677, 1736, 1806, 1911, 2107, 2184, 2236, 2408, 2418, 2548, 2604, 2666, 2821, 3038, 3224, 3354, 3612, 3822, 3913, 3999, 4214, 4472, 4557, 4836, 5096, 5208, 5332, 5642, 6076, 6321, 6708, 7224, 7644, 7826, 7998, 8428, 8463, 9114, 9331, 9672, 10664, 11284, 11739, 12152, 12642, 13416, 15288, 15652, 15996, 16856, 16926, 17329, 18228, 18662, 19747, 22568, 23478, 25284, 27391, 27993, 31304, 31992, 33852, 34658, 36456, 37324, 39494, 46956, 50568, 51987, 54782, 55986, 59241, 65317, 67704, 69316, 74648, 78988, 82173, 93912, 103974, 109564, 111972, 118482, 121303, 130634, 138632, 157976, 164346, 195951, 207948, 219128, 223944, 236964, 242606, 261268, 328692, 363909, 391902, 415896, 473928, 485212, 522536, 657384, 727818, 783804, 849121, 970424, 1455636, 1567608, 1698242, 2547363, 2911272, 3396484, 5094726, 6792968, 10189452, 20378904]

約数ペア:

[(1, 20378904), (2, 10189452), (3, 6792968), (4, 5094726), (6, 3396484), (7, 2911272), (8, 2547363), (12, 1698242), (13, 1567608), (14, 1455636), (21, 970424), (24, 849121), (26, 783804), (28, 727818), (31, 657384), (39, 522536), (42, 485212), (43, 473928), (49, 415896), (52, 391902), (56, 363909), (62, 328692), (78, 261268), (84, 242606), (86, 236964), (91, 223944), (93, 219128), (98, 207948), (104, 195951), (124, 164346), (129, 157976), (147, 138632), (156, 130634), (168, 121303), (172, 118482), (182, 111972), (186, 109564), (196, 103974), (217, 93912), (248, 82173), (258, 78988), (273, 74648), (294, 69316), (301, 67704), (312, 65317), (344, 59241), (364, 55986), (372, 54782), (392, 51987), (403, 50568), (434, 46956), (516, 39494), (546, 37324), (559, 36456), (588, 34658), (602, 33852), (637, 31992), (651, 31304), (728, 27993), (744, 27391), (806, 25284), (868, 23478), (903, 22568), (1032, 19747), (1092, 18662), (1118, 18228), (1176, 17329), (1204, 16926), (1209, 16856), (1274, 15996), (1302, 15652), (1333, 15288), (1519, 13416), (1612, 12642), (1677, 12152), (1736, 11739), (1806, 11284), (1911, 10664), (2107, 9672), (2184, 9331), (2236, 9114), (2408, 8463), (2418, 8428), (2548, 7998), (2604, 7826), (2666, 7644), (2821, 7224), (3038, 6708), (3224, 6321), (3354, 6076), (3612, 5642), (3822, 5332), (3913, 5208), (3999, 5096), (4214, 4836), (4472, 4557)]