81424360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{379}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 189604800

約数和(自身を除く): 108180440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 131, 164, 205, 262, 328, 379, 410, 524, 655, 758, 820, 1048, 1310, 1516, 1640, 1895, 2620, 3032, 3790, 5240, 5371, 7580, 10742, 15160, 15539, 21484, 26855, 31078, 42968, 49649, 53710, 62156, 77695, 99298, 107420, 124312, 155390, 198596, 214840, 248245, 310780, 397192, 496490, 621560, 992980, 1985960, 2035609, 4071218, 8142436, 10178045, 16284872, 20356090, 40712180, 81424360]

約数ペア:

[(1, 81424360), (2, 40712180), (4, 20356090), (5, 16284872), (8, 10178045), (10, 8142436), (20, 4071218), (40, 2035609), (41, 1985960), (82, 992980), (131, 621560), (164, 496490), (205, 397192), (262, 310780), (328, 248245), (379, 214840), (410, 198596), (524, 155390), (655, 124312), (758, 107420), (820, 99298), (1048, 77695), (1310, 62156), (1516, 53710), (1640, 49649), (1895, 42968), (2620, 31078), (3032, 26855), (3790, 21484), (5240, 15539), (5371, 15160), (7580, 10742)]