644777896

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1\times {\mathrm{367}}^1$

素因数の和:746

約数の個数: 64

約数和(自身を含む): 1401638400

約数和(自身を除く): 756860504

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 229, 274, 367, 458, 548, 734, 916, 959, 1096, 1468, 1603, 1832, 1918, 2569, 2936, 3206, 3836, 5138, 6412, 7672, 10276, 12824, 20552, 31373, 50279, 62746, 84043, 100558, 125492, 168086, 201116, 219611, 250984, 336172, 351953, 402232, 439222, 588301, 672344, 703906, 878444, 1176602, 1407812, 1756888, 2353204, 2815624, 4706408, 11513891, 23027782, 46055564, 80597237, 92111128, 161194474, 322388948, 644777896]

約数ペア:

[(1, 644777896), (2, 322388948), (4, 161194474), (7, 92111128), (8, 80597237), (14, 46055564), (28, 23027782), (56, 11513891), (137, 4706408), (229, 2815624), (274, 2353204), (367, 1756888), (458, 1407812), (548, 1176602), (734, 878444), (916, 703906), (959, 672344), (1096, 588301), (1468, 439222), (1603, 402232), (1832, 351953), (1918, 336172), (2569, 250984), (2936, 219611), (3206, 201116), (3836, 168086), (5138, 125492), (6412, 100558), (7672, 84043), (10276, 62746), (12824, 50279), (20552, 31373)]