408540320

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{2657}}^1$

素因数の和:2734

約数の個数: 72

約数和(自身を含む): 997690932

約数和(自身を除く): 589150612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 961, 992, 1240, 1922, 2480, 2657, 3844, 4805, 4960, 5314, 7688, 9610, 10628, 13285, 15376, 19220, 21256, 26570, 30752, 38440, 42512, 53140, 76880, 82367, 85024, 106280, 153760, 164734, 212560, 329468, 411835, 425120, 658936, 823670, 1317872, 1647340, 2553377, 2635744, 3294680, 5106754, 6589360, 10213508, 12766885, 13178720, 20427016, 25533770, 40854032, 51067540, 81708064, 102135080, 204270160, 408540320]

約数ペア:

[(1, 408540320), (2, 204270160), (4, 102135080), (5, 81708064), (8, 51067540), (10, 40854032), (16, 25533770), (20, 20427016), (31, 13178720), (32, 12766885), (40, 10213508), (62, 6589360), (80, 5106754), (124, 3294680), (155, 2635744), (160, 2553377), (248, 1647340), (310, 1317872), (496, 823670), (620, 658936), (961, 425120), (992, 411835), (1240, 329468), (1922, 212560), (2480, 164734), (2657, 153760), (3844, 106280), (4805, 85024), (4960, 82367), (5314, 76880), (7688, 53140), (9610, 42512), (10628, 38440), (13285, 30752), (15376, 26570), (19220, 21256)]