21244600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8171}}^1$

素因数の和:8200

約数の個数: 48

約数和(自身を含む): 53199720

約数和(自身を除く): 31955120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8171, 16342, 32684, 40855, 65368, 81710, 106223, 163420, 204275, 212446, 326840, 408550, 424892, 531115, 817100, 849784, 1062230, 1634200, 2124460, 2655575, 4248920, 5311150, 10622300, 21244600]

約数ペア:

[(1, 21244600), (2, 10622300), (4, 5311150), (5, 4248920), (8, 2655575), (10, 2124460), (13, 1634200), (20, 1062230), (25, 849784), (26, 817100), (40, 531115), (50, 424892), (52, 408550), (65, 326840), (100, 212446), (104, 204275), (130, 163420), (200, 106223), (260, 81710), (325, 65368), (520, 40855), (650, 32684), (1300, 16342), (2600, 8171)]