21988510

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{6091}}^1$

素因数の和:6136

約数の個数: 24

約数和(自身を含む): 41778936

約数和(自身を除く): 19790426

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 6091, 12182, 30455, 60910, 115729, 231458, 578645, 1157290, 2198851, 4397702, 10994255, 21988510]

約数ペア:

[(1, 21988510), (2, 10994255), (5, 4397702), (10, 2198851), (19, 1157290), (38, 578645), (95, 231458), (190, 115729), (361, 60910), (722, 30455), (1805, 12182), (3610, 6091)]