20218120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{659}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 29677880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 59, 65, 104, 118, 130, 236, 260, 295, 472, 520, 590, 659, 767, 1180, 1318, 1534, 2360, 2636, 3068, 3295, 3835, 5272, 6136, 6590, 7670, 8567, 13180, 15340, 17134, 26360, 30680, 34268, 38881, 42835, 68536, 77762, 85670, 155524, 171340, 194405, 311048, 342680, 388810, 505453, 777620, 1010906, 1555240, 2021812, 2527265, 4043624, 5054530, 10109060, 20218120]

約数ペア:

[(1, 20218120), (2, 10109060), (4, 5054530), (5, 4043624), (8, 2527265), (10, 2021812), (13, 1555240), (20, 1010906), (26, 777620), (40, 505453), (52, 388810), (59, 342680), (65, 311048), (104, 194405), (118, 171340), (130, 155524), (236, 85670), (260, 77762), (295, 68536), (472, 42835), (520, 38881), (590, 34268), (659, 30680), (767, 26360), (1180, 17134), (1318, 15340), (1534, 13180), (2360, 8567), (2636, 7670), (3068, 6590), (3295, 6136), (3835, 5272)]