81233720

素因数分解:

$2^3\times 5^1\times {\mathrm{953}}^1\times {\mathrm{2131}}^1$

素因数の和:3095

約数の個数: 32

約数和(自身を含む): 183053520

約数和(自身を除く): 101819800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 953, 1906, 2131, 3812, 4262, 4765, 7624, 8524, 9530, 10655, 17048, 19060, 21310, 38120, 42620, 85240, 2030843, 4061686, 8123372, 10154215, 16246744, 20308430, 40616860, 81233720]

約数ペア:

[(1, 81233720), (2, 40616860), (4, 20308430), (5, 16246744), (8, 10154215), (10, 8123372), (20, 4061686), (40, 2030843), (953, 85240), (1906, 42620), (2131, 38120), (3812, 21310), (4262, 19060), (4765, 17048), (7624, 10655), (8524, 9530)]