21501160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1489}}^1$

素因数の和:1538

約数の個数: 48

約数和(自身を含む): 51092100

約数和(自身を除く): 29590940

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1489, 1805, 2888, 2978, 3610, 5956, 7220, 7445, 11912, 14440, 14890, 28291, 29780, 56582, 59560, 113164, 141455, 226328, 282910, 537529, 565820, 1075058, 1131640, 2150116, 2687645, 4300232, 5375290, 10750580, 21501160]

約数ペア:

[(1, 21501160), (2, 10750580), (4, 5375290), (5, 4300232), (8, 2687645), (10, 2150116), (19, 1131640), (20, 1075058), (38, 565820), (40, 537529), (76, 282910), (95, 226328), (152, 141455), (190, 113164), (361, 59560), (380, 56582), (722, 29780), (760, 28291), (1444, 14890), (1489, 14440), (1805, 11912), (2888, 7445), (2978, 7220), (3610, 5956)]