20213840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6829}}^1$

素因数の和:6879

約数の個数: 40

約数和(自身を含む): 48274440

約数和(自身を除く): 28060600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6829, 13658, 27316, 34145, 54632, 68290, 109264, 136580, 252673, 273160, 505346, 546320, 1010692, 1263365, 2021384, 2526730, 4042768, 5053460, 10106920, 20213840]

約数ペア:

[(1, 20213840), (2, 10106920), (4, 5053460), (5, 4042768), (8, 2526730), (10, 2021384), (16, 1263365), (20, 1010692), (37, 546320), (40, 505346), (74, 273160), (80, 252673), (148, 136580), (185, 109264), (296, 68290), (370, 54632), (592, 34145), (740, 27316), (1480, 13658), (2960, 6829)]