81831940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1483}}^1$

素因数の和:1612

約数の個数: 48

約数和(自身を含む): 179504640

約数和(自身を除く): 97672700

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1483, 1780, 2759, 2966, 5518, 5932, 7415, 11036, 13795, 14830, 27590, 29660, 45973, 55180, 91946, 131987, 183892, 229865, 263974, 459730, 527948, 659935, 919460, 1319870, 2639740, 4091597, 8183194, 16366388, 20457985, 40915970, 81831940]

約数ペア:

[(1, 81831940), (2, 40915970), (4, 20457985), (5, 16366388), (10, 8183194), (20, 4091597), (31, 2639740), (62, 1319870), (89, 919460), (124, 659935), (155, 527948), (178, 459730), (310, 263974), (356, 229865), (445, 183892), (620, 131987), (890, 91946), (1483, 55180), (1780, 45973), (2759, 29660), (2966, 27590), (5518, 14830), (5932, 13795), (7415, 11036)]