21764080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1231}}^1$

素因数の和:1274

約数の個数: 80

約数和(自身を含む): 57746304

約数和(自身を除く): 35982224

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1231, 1360, 1768, 2210, 2462, 3536, 4420, 4924, 6155, 8840, 9848, 12310, 16003, 17680, 19696, 20927, 24620, 32006, 41854, 49240, 64012, 80015, 83708, 98480, 104635, 128024, 160030, 167416, 209270, 256048, 272051, 320060, 334832, 418540, 544102, 640120, 837080, 1088204, 1280240, 1360255, 1674160, 2176408, 2720510, 4352816, 5441020, 10882040, 21764080]

約数ペア:

[(1, 21764080), (2, 10882040), (4, 5441020), (5, 4352816), (8, 2720510), (10, 2176408), (13, 1674160), (16, 1360255), (17, 1280240), (20, 1088204), (26, 837080), (34, 640120), (40, 544102), (52, 418540), (65, 334832), (68, 320060), (80, 272051), (85, 256048), (104, 209270), (130, 167416), (136, 160030), (170, 128024), (208, 104635), (221, 98480), (260, 83708), (272, 80015), (340, 64012), (442, 49240), (520, 41854), (680, 32006), (884, 24620), (1040, 20927), (1105, 19696), (1231, 17680), (1360, 16003), (1768, 12310), (2210, 9848), (2462, 8840), (3536, 6155), (4420, 4924)]