20713784

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{769}}^1$

素因数の和:832

約数の個数: 64

約数和(自身を含む): 49156800

約数和(自身を除く): 28443016

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 37, 52, 56, 74, 91, 104, 148, 182, 259, 296, 364, 481, 518, 728, 769, 962, 1036, 1538, 1924, 2072, 3076, 3367, 3848, 5383, 6152, 6734, 9997, 10766, 13468, 19994, 21532, 26936, 28453, 39988, 43064, 56906, 69979, 79976, 113812, 139958, 199171, 227624, 279916, 369889, 398342, 559832, 739778, 796684, 1479556, 1593368, 2589223, 2959112, 5178446, 10356892, 20713784]

約数ペア:

[(1, 20713784), (2, 10356892), (4, 5178446), (7, 2959112), (8, 2589223), (13, 1593368), (14, 1479556), (26, 796684), (28, 739778), (37, 559832), (52, 398342), (56, 369889), (74, 279916), (91, 227624), (104, 199171), (148, 139958), (182, 113812), (259, 79976), (296, 69979), (364, 56906), (481, 43064), (518, 39988), (728, 28453), (769, 26936), (962, 21532), (1036, 19994), (1538, 13468), (1924, 10766), (2072, 9997), (3076, 6734), (3367, 6152), (3848, 5383)]