28037900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 67495680

約数和(自身を除く): 39457780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 71, 100, 110, 142, 220, 275, 284, 355, 359, 550, 710, 718, 781, 1100, 1420, 1436, 1562, 1775, 1795, 3124, 3550, 3590, 3905, 3949, 7100, 7180, 7810, 7898, 8975, 15620, 15796, 17950, 19525, 19745, 25489, 35900, 39050, 39490, 50978, 78100, 78980, 98725, 101956, 127445, 197450, 254890, 280379, 394900, 509780, 560758, 637225, 1121516, 1274450, 1401895, 2548900, 2803790, 5607580, 7009475, 14018950, 28037900]

約数ペア:

[(1, 28037900), (2, 14018950), (4, 7009475), (5, 5607580), (10, 2803790), (11, 2548900), (20, 1401895), (22, 1274450), (25, 1121516), (44, 637225), (50, 560758), (55, 509780), (71, 394900), (100, 280379), (110, 254890), (142, 197450), (220, 127445), (275, 101956), (284, 98725), (355, 78980), (359, 78100), (550, 50978), (710, 39490), (718, 39050), (781, 35900), (1100, 25489), (1420, 19745), (1436, 19525), (1562, 17950), (1775, 15796), (1795, 15620), (3124, 8975), (3550, 7898), (3590, 7810), (3905, 7180), (3949, 7100)]