28756880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18919}}^1$

素因数の和:18951

約数の個数: 40

約数和(自身を含む): 70382400

約数和(自身を除く): 41625520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18919, 37838, 75676, 94595, 151352, 189190, 302704, 359461, 378380, 718922, 756760, 1437844, 1513520, 1797305, 2875688, 3594610, 5751376, 7189220, 14378440, 28756880]

約数ペア:

[(1, 28756880), (2, 14378440), (4, 7189220), (5, 5751376), (8, 3594610), (10, 2875688), (16, 1797305), (19, 1513520), (20, 1437844), (38, 756760), (40, 718922), (76, 378380), (80, 359461), (95, 302704), (152, 189190), (190, 151352), (304, 94595), (380, 75676), (760, 37838), (1520, 18919)]