21273920

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3499}}^1$

素因数の和:3535

約数の個数: 56

約数和(自身を含む): 53340000

約数和(自身を除く): 32066080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3499, 6080, 6998, 13996, 17495, 27992, 34990, 55984, 66481, 69980, 111968, 132962, 139960, 223936, 265924, 279920, 332405, 531848, 559840, 664810, 1063696, 1119680, 1329620, 2127392, 2659240, 4254784, 5318480, 10636960, 21273920]

約数ペア:

[(1, 21273920), (2, 10636960), (4, 5318480), (5, 4254784), (8, 2659240), (10, 2127392), (16, 1329620), (19, 1119680), (20, 1063696), (32, 664810), (38, 559840), (40, 531848), (64, 332405), (76, 279920), (80, 265924), (95, 223936), (152, 139960), (160, 132962), (190, 111968), (304, 69980), (320, 66481), (380, 55984), (608, 34990), (760, 27992), (1216, 17495), (1520, 13996), (3040, 6998), (3499, 6080)]