21001020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8537}}^1$

素因数の和:8590

約数の個数: 48

約数和(自身を含む): 60244128

約数和(自身を除く): 39243108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8537, 17074, 25611, 34148, 42685, 51222, 85370, 102444, 128055, 170740, 256110, 350017, 512220, 700034, 1050051, 1400068, 1750085, 2100102, 3500170, 4200204, 5250255, 7000340, 10500510, 21001020]

約数ペア:

[(1, 21001020), (2, 10500510), (3, 7000340), (4, 5250255), (5, 4200204), (6, 3500170), (10, 2100102), (12, 1750085), (15, 1400068), (20, 1050051), (30, 700034), (41, 512220), (60, 350017), (82, 256110), (123, 170740), (164, 128055), (205, 102444), (246, 85370), (410, 51222), (492, 42685), (615, 34148), (820, 25611), (1230, 17074), (2460, 8537)]