20537744

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 40979520

約数和(自身を除く): 20441776

約数列:

[1, 2, 4, 8, 16, 71, 101, 142, 179, 202, 284, 358, 404, 568, 716, 808, 1136, 1432, 1616, 2864, 7171, 12709, 14342, 18079, 25418, 28684, 36158, 50836, 57368, 72316, 101672, 114736, 144632, 203344, 289264, 1283609, 2567218, 5134436, 10268872, 20537744]

約数ペア:

[(1, 20537744), (2, 10268872), (4, 5134436), (8, 2567218), (16, 1283609), (71, 289264), (101, 203344), (142, 144632), (179, 114736), (202, 101672), (284, 72316), (358, 57368), (404, 50836), (568, 36158), (716, 28684), (808, 25418), (1136, 18079), (1432, 14342), (1616, 12709), (2864, 7171)]