81420880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32831}}^1$

素因数の和:32875

約数の個数: 40

約数和(自身を含む): 195416064

約数和(自身を除く): 113995184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32831, 65662, 131324, 164155, 262648, 328310, 525296, 656620, 1017761, 1313240, 2035522, 2626480, 4071044, 5088805, 8142088, 10177610, 16284176, 20355220, 40710440, 81420880]

約数ペア:

[(1, 81420880), (2, 40710440), (4, 20355220), (5, 16284176), (8, 10177610), (10, 8142088), (16, 5088805), (20, 4071044), (31, 2626480), (40, 2035522), (62, 1313240), (80, 1017761), (124, 656620), (155, 525296), (248, 328310), (310, 262648), (496, 164155), (620, 131324), (1240, 65662), (2480, 32831)]