20005456

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{719}}^1$

素因数の和:811

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20706224

約数列:

[1, 2, 4, 8, 16, 37, 47, 74, 94, 148, 188, 296, 376, 592, 719, 752, 1438, 1739, 2876, 3478, 5752, 6956, 11504, 13912, 26603, 27824, 33793, 53206, 67586, 106412, 135172, 212824, 270344, 425648, 540688, 1250341, 2500682, 5001364, 10002728, 20005456]

約数ペア:

[(1, 20005456), (2, 10002728), (4, 5001364), (8, 2500682), (16, 1250341), (37, 540688), (47, 425648), (74, 270344), (94, 212824), (148, 135172), (188, 106412), (296, 67586), (376, 53206), (592, 33793), (719, 27824), (752, 26603), (1438, 13912), (1739, 11504), (2876, 6956), (3478, 5752)]