27999920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 74883600

約数和(自身を除く): 46883680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 109, 130, 152, 169, 190, 208, 218, 247, 260, 304, 338, 380, 436, 494, 520, 545, 676, 760, 845, 872, 988, 1040, 1090, 1235, 1352, 1417, 1520, 1690, 1744, 1976, 2071, 2180, 2470, 2704, 2834, 3211, 3380, 3952, 4142, 4360, 4940, 5668, 6422, 6760, 7085, 8284, 8720, 9880, 10355, 11336, 12844, 13520, 14170, 16055, 16568, 18421, 19760, 20710, 22672, 25688, 26923, 28340, 32110, 33136, 36842, 41420, 51376, 53846, 56680, 64220, 73684, 82840, 92105, 107692, 113360, 128440, 134615, 147368, 165680, 184210, 215384, 256880, 269230, 294736, 349999, 368420, 430768, 538460, 699998, 736840, 1076920, 1399996, 1473680, 1749995, 2153840, 2799992, 3499990, 5599984, 6999980, 13999960, 27999920]

約数ペア:

[(1, 27999920), (2, 13999960), (4, 6999980), (5, 5599984), (8, 3499990), (10, 2799992), (13, 2153840), (16, 1749995), (19, 1473680), (20, 1399996), (26, 1076920), (38, 736840), (40, 699998), (52, 538460), (65, 430768), (76, 368420), (80, 349999), (95, 294736), (104, 269230), (109, 256880), (130, 215384), (152, 184210), (169, 165680), (190, 147368), (208, 134615), (218, 128440), (247, 113360), (260, 107692), (304, 92105), (338, 82840), (380, 73684), (436, 64220), (494, 56680), (520, 53846), (545, 51376), (676, 41420), (760, 36842), (845, 33136), (872, 32110), (988, 28340), (1040, 26923), (1090, 25688), (1235, 22672), (1352, 20710), (1417, 19760), (1520, 18421), (1690, 16568), (1744, 16055), (1976, 14170), (2071, 13520), (2180, 12844), (2470, 11336), (2704, 10355), (2834, 9880), (3211, 8720), (3380, 8284), (3952, 7085), (4142, 6760), (4360, 6422), (4940, 5668)]