21285990

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2389}}^1$

素因数の和:2419

約数の個数: 80

約数和(自身を含む): 62465040

約数和(自身を除く): 41179050

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 81, 90, 99, 110, 135, 162, 165, 198, 270, 297, 330, 405, 495, 594, 810, 891, 990, 1485, 1782, 2389, 2970, 4455, 4778, 7167, 8910, 11945, 14334, 21501, 23890, 26279, 35835, 43002, 52558, 64503, 71670, 78837, 107505, 129006, 131395, 157674, 193509, 215010, 236511, 262790, 322515, 387018, 394185, 473022, 645030, 709533, 788370, 967545, 1182555, 1419066, 1935090, 2128599, 2365110, 3547665, 4257198, 7095330, 10642995, 21285990]

約数ペア:

[(1, 21285990), (2, 10642995), (3, 7095330), (5, 4257198), (6, 3547665), (9, 2365110), (10, 2128599), (11, 1935090), (15, 1419066), (18, 1182555), (22, 967545), (27, 788370), (30, 709533), (33, 645030), (45, 473022), (54, 394185), (55, 387018), (66, 322515), (81, 262790), (90, 236511), (99, 215010), (110, 193509), (135, 157674), (162, 131395), (165, 129006), (198, 107505), (270, 78837), (297, 71670), (330, 64503), (405, 52558), (495, 43002), (594, 35835), (810, 26279), (891, 23890), (990, 21501), (1485, 14334), (1782, 11945), (2389, 8910), (2970, 7167), (4455, 4778)]