21079980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:500

約数の個数: 96

約数和(自身を含む): 66393600

約数和(自身を除く): 45313620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 103, 108, 135, 180, 206, 270, 309, 379, 412, 515, 540, 618, 758, 927, 1030, 1137, 1236, 1516, 1545, 1854, 1895, 2060, 2274, 2781, 3090, 3411, 3708, 3790, 4548, 4635, 5562, 5685, 6180, 6822, 7580, 9270, 10233, 11124, 11370, 13644, 13905, 17055, 18540, 20466, 22740, 27810, 34110, 39037, 40932, 51165, 55620, 68220, 78074, 102330, 117111, 156148, 195185, 204660, 234222, 351333, 390370, 468444, 585555, 702666, 780740, 1053999, 1171110, 1405332, 1756665, 2107998, 2342220, 3513330, 4215996, 5269995, 7026660, 10539990, 21079980]

約数ペア:

[(1, 21079980), (2, 10539990), (3, 7026660), (4, 5269995), (5, 4215996), (6, 3513330), (9, 2342220), (10, 2107998), (12, 1756665), (15, 1405332), (18, 1171110), (20, 1053999), (27, 780740), (30, 702666), (36, 585555), (45, 468444), (54, 390370), (60, 351333), (90, 234222), (103, 204660), (108, 195185), (135, 156148), (180, 117111), (206, 102330), (270, 78074), (309, 68220), (379, 55620), (412, 51165), (515, 40932), (540, 39037), (618, 34110), (758, 27810), (927, 22740), (1030, 20466), (1137, 18540), (1236, 17055), (1516, 13905), (1545, 13644), (1854, 11370), (1895, 11124), (2060, 10233), (2274, 9270), (2781, 7580), (3090, 6822), (3411, 6180), (3708, 5685), (3790, 5562), (4548, 4635)]