20975136

素因数分解:

$2^5\times 3^1\times 7^5\times {\mathrm{13}}^1$

素因数の和:61

約数の個数: 144

約数和(自身を含む): 69177024

約数和(自身を除く): 48201888

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 49, 52, 56, 78, 84, 91, 96, 98, 104, 112, 147, 156, 168, 182, 196, 208, 224, 273, 294, 312, 336, 343, 364, 392, 416, 546, 588, 624, 637, 672, 686, 728, 784, 1029, 1092, 1176, 1248, 1274, 1372, 1456, 1568, 1911, 2058, 2184, 2352, 2401, 2548, 2744, 2912, 3822, 4116, 4368, 4459, 4704, 4802, 5096, 5488, 7203, 7644, 8232, 8736, 8918, 9604, 10192, 10976, 13377, 14406, 15288, 16464, 16807, 17836, 19208, 20384, 26754, 28812, 30576, 31213, 32928, 33614, 35672, 38416, 50421, 53508, 57624, 61152, 62426, 67228, 71344, 76832, 93639, 100842, 107016, 115248, 124852, 134456, 142688, 187278, 201684, 214032, 218491, 230496, 249704, 268912, 374556, 403368, 428064, 436982, 499408, 537824, 655473, 749112, 806736, 873964, 998816, 1310946, 1498224, 1613472, 1747928, 2621892, 2996448, 3495856, 5243784, 6991712, 10487568, 20975136]

約数ペア:

[(1, 20975136), (2, 10487568), (3, 6991712), (4, 5243784), (6, 3495856), (7, 2996448), (8, 2621892), (12, 1747928), (13, 1613472), (14, 1498224), (16, 1310946), (21, 998816), (24, 873964), (26, 806736), (28, 749112), (32, 655473), (39, 537824), (42, 499408), (48, 436982), (49, 428064), (52, 403368), (56, 374556), (78, 268912), (84, 249704), (91, 230496), (96, 218491), (98, 214032), (104, 201684), (112, 187278), (147, 142688), (156, 134456), (168, 124852), (182, 115248), (196, 107016), (208, 100842), (224, 93639), (273, 76832), (294, 71344), (312, 67228), (336, 62426), (343, 61152), (364, 57624), (392, 53508), (416, 50421), (546, 38416), (588, 35672), (624, 33614), (637, 32928), (672, 31213), (686, 30576), (728, 28812), (784, 26754), (1029, 20384), (1092, 19208), (1176, 17836), (1248, 16807), (1274, 16464), (1372, 15288), (1456, 14406), (1568, 13377), (1911, 10976), (2058, 10192), (2184, 9604), (2352, 8918), (2401, 8736), (2548, 8232), (2744, 7644), (2912, 7203), (3822, 5488), (4116, 5096), (4368, 4802), (4459, 4704)]