86821720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127679}}^1$

素因数の和:127707

約数の個数: 32

約数和(自身を含む): 206841600

約数和(自身を除く): 120019880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 127679, 255358, 510716, 638395, 1021432, 1276790, 2170543, 2553580, 4341086, 5107160, 8682172, 10852715, 17364344, 21705430, 43410860, 86821720]

約数ペア:

[(1, 86821720), (2, 43410860), (4, 21705430), (5, 17364344), (8, 10852715), (10, 8682172), (17, 5107160), (20, 4341086), (34, 2553580), (40, 2170543), (68, 1276790), (85, 1021432), (136, 638395), (170, 510716), (340, 255358), (680, 127679)]