2153840

素因数分解:

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

素因数の和:154

約数の個数: 80

約数和(自身を含む): 5728800

約数和(自身を除く): 3574960

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, 190, 208, 218, 247, 260, 304, 380, 436, 494, 520, 545, 760, 872, 988, 1040, 1090, 1235, 1417, 1520, 1744, 1976, 2071, 2180, 2470, 2834, 3952, 4142, 4360, 4940, 5668, 7085, 8284, 8720, 9880, 10355, 11336, 14170, 16568, 19760, 20710, 22672, 26923, 28340, 33136, 41420, 53846, 56680, 82840, 107692, 113360, 134615, 165680, 215384, 269230, 430768, 538460, 1076920, 2153840]

約数ペア:

[(1, 2153840), (2, 1076920), (4, 538460), (5, 430768), (8, 269230), (10, 215384), (13, 165680), (16, 134615), (19, 113360), (20, 107692), (26, 82840), (38, 56680), (40, 53846), (52, 41420), (65, 33136), (76, 28340), (80, 26923), (95, 22672), (104, 20710), (109, 19760), (130, 16568), (152, 14170), (190, 11336), (208, 10355), (218, 9880), (247, 8720), (260, 8284), (304, 7085), (380, 5668), (436, 4940), (494, 4360), (520, 4142), (545, 3952), (760, 2834), (872, 2470), (988, 2180), (1040, 2071), (1090, 1976), (1235, 1744), (1417, 1520)]