21176830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1\times {\mathrm{491}}^1$

素因数の和:744

約数の個数: 32

約数和(自身を含む): 40383360

約数和(自身を除く): 19206530

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 227, 454, 491, 982, 1135, 2270, 2455, 4313, 4910, 8626, 9329, 18658, 21565, 43130, 46645, 93290, 111457, 222914, 557285, 1114570, 2117683, 4235366, 10588415, 21176830]

約数ペア:

[(1, 21176830), (2, 10588415), (5, 4235366), (10, 2117683), (19, 1114570), (38, 557285), (95, 222914), (190, 111457), (227, 93290), (454, 46645), (491, 43130), (982, 21565), (1135, 18658), (2270, 9329), (2455, 8626), (4313, 4910)]