1640390950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^3\times {\mathrm{157}}^2$

素因数の和:359

約数の個数: 72

約数和(自身を含む): 3377522664

約数和(自身を除く): 1737131714

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 157, 242, 275, 314, 550, 605, 785, 1210, 1331, 1570, 1727, 2662, 3025, 3454, 3925, 6050, 6655, 7850, 8635, 13310, 17270, 18997, 24649, 33275, 37994, 43175, 49298, 66550, 86350, 94985, 123245, 189970, 208967, 246490, 271139, 417934, 474925, 542278, 616225, 949850, 1044835, 1232450, 1355695, 2089670, 2711390, 2982529, 5224175, 5965058, 6778475, 10448350, 13556950, 14912645, 29825290, 32807819, 65615638, 74563225, 149126450, 164039095, 328078190, 820195475, 1640390950]

約数ペア:

[(1, 1640390950), (2, 820195475), (5, 328078190), (10, 164039095), (11, 149126450), (22, 74563225), (25, 65615638), (50, 32807819), (55, 29825290), (110, 14912645), (121, 13556950), (157, 10448350), (242, 6778475), (275, 5965058), (314, 5224175), (550, 2982529), (605, 2711390), (785, 2089670), (1210, 1355695), (1331, 1232450), (1570, 1044835), (1727, 949850), (2662, 616225), (3025, 542278), (3454, 474925), (3925, 417934), (6050, 271139), (6655, 246490), (7850, 208967), (8635, 189970), (13310, 123245), (17270, 94985), (18997, 86350), (24649, 66550), (33275, 49298), (37994, 43175)]