18856090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 40124160

約数和(自身を除く): 21268070

約数列:

[1, 2, 5, 10, 11, 22, 23, 29, 46, 55, 58, 110, 115, 145, 230, 253, 257, 290, 319, 506, 514, 638, 667, 1265, 1285, 1334, 1595, 2530, 2570, 2827, 3190, 3335, 5654, 5911, 6670, 7337, 7453, 11822, 14135, 14674, 14906, 28270, 29555, 36685, 37265, 59110, 65021, 73370, 74530, 81983, 130042, 163966, 171419, 325105, 342838, 409915, 650210, 819830, 857095, 1714190, 1885609, 3771218, 9428045, 18856090]

約数ペア:

[(1, 18856090), (2, 9428045), (5, 3771218), (10, 1885609), (11, 1714190), (22, 857095), (23, 819830), (29, 650210), (46, 409915), (55, 342838), (58, 325105), (110, 171419), (115, 163966), (145, 130042), (230, 81983), (253, 74530), (257, 73370), (290, 65021), (319, 59110), (506, 37265), (514, 36685), (638, 29555), (667, 28270), (1265, 14906), (1285, 14674), (1334, 14135), (1595, 11822), (2530, 7453), (2570, 7337), (2827, 6670), (3190, 5911), (3335, 5654)]