21905160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{659}}^1$

素因数の和:950

約数の個数: 64

約数和(自身を含む): 66052800

約数和(自身を除く): 44147640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 277, 554, 659, 831, 1108, 1318, 1385, 1662, 1977, 2216, 2636, 2770, 3295, 3324, 3954, 4155, 5272, 5540, 6590, 6648, 7908, 8310, 9885, 11080, 13180, 15816, 16620, 19770, 26360, 33240, 39540, 79080, 182543, 365086, 547629, 730172, 912715, 1095258, 1460344, 1825430, 2190516, 2738145, 3650860, 4381032, 5476290, 7301720, 10952580, 21905160]

約数ペア:

[(1, 21905160), (2, 10952580), (3, 7301720), (4, 5476290), (5, 4381032), (6, 3650860), (8, 2738145), (10, 2190516), (12, 1825430), (15, 1460344), (20, 1095258), (24, 912715), (30, 730172), (40, 547629), (60, 365086), (120, 182543), (277, 79080), (554, 39540), (659, 33240), (831, 26360), (1108, 19770), (1318, 16620), (1385, 15816), (1662, 13180), (1977, 11080), (2216, 9885), (2636, 8310), (2770, 7908), (3295, 6648), (3324, 6590), (3954, 5540), (4155, 5272)]