21088020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{631}}^1$

素因数の和:1200

約数の個数: 48

約数和(自身を含む): 59246208

約数和(自身を除く): 38158188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 557, 631, 1114, 1262, 1671, 1893, 2228, 2524, 2785, 3155, 3342, 3786, 5570, 6310, 6684, 7572, 8355, 9465, 11140, 12620, 16710, 18930, 33420, 37860, 351467, 702934, 1054401, 1405868, 1757335, 2108802, 3514670, 4217604, 5272005, 7029340, 10544010, 21088020]

約数ペア:

[(1, 21088020), (2, 10544010), (3, 7029340), (4, 5272005), (5, 4217604), (6, 3514670), (10, 2108802), (12, 1757335), (15, 1405868), (20, 1054401), (30, 702934), (60, 351467), (557, 37860), (631, 33420), (1114, 18930), (1262, 16710), (1671, 12620), (1893, 11140), (2228, 9465), (2524, 8355), (2785, 7572), (3155, 6684), (3342, 6310), (3786, 5570)]