21171660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1373}}^1$

素因数の和:1642

約数の個数: 48

約数和(自身を含む): 59554656

約数和(自身を除く): 38382996

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1373, 1542, 2570, 2746, 3084, 3855, 4119, 5140, 5492, 6865, 7710, 8238, 13730, 15420, 16476, 20595, 27460, 41190, 82380, 352861, 705722, 1058583, 1411444, 1764305, 2117166, 3528610, 4234332, 5292915, 7057220, 10585830, 21171660]

約数ペア:

[(1, 21171660), (2, 10585830), (3, 7057220), (4, 5292915), (5, 4234332), (6, 3528610), (10, 2117166), (12, 1764305), (15, 1411444), (20, 1058583), (30, 705722), (60, 352861), (257, 82380), (514, 41190), (771, 27460), (1028, 20595), (1285, 16476), (1373, 15420), (1542, 13730), (2570, 8238), (2746, 7710), (3084, 6865), (3855, 5492), (4119, 5140)]