28484560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:536

約数の個数: 80

約数和(自身を含む): 72651600

約数和(自身を除く): 44167040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 449, 488, 520, 610, 793, 898, 976, 1040, 1220, 1586, 1796, 2245, 2440, 3172, 3592, 3965, 4490, 4880, 5837, 6344, 7184, 7930, 8980, 11674, 12688, 15860, 17960, 23348, 27389, 29185, 31720, 35920, 46696, 54778, 58370, 63440, 93392, 109556, 116740, 136945, 219112, 233480, 273890, 356057, 438224, 466960, 547780, 712114, 1095560, 1424228, 1780285, 2191120, 2848456, 3560570, 5696912, 7121140, 14242280, 28484560]

約数ペア:

[(1, 28484560), (2, 14242280), (4, 7121140), (5, 5696912), (8, 3560570), (10, 2848456), (13, 2191120), (16, 1780285), (20, 1424228), (26, 1095560), (40, 712114), (52, 547780), (61, 466960), (65, 438224), (80, 356057), (104, 273890), (122, 233480), (130, 219112), (208, 136945), (244, 116740), (260, 109556), (305, 93392), (449, 63440), (488, 58370), (520, 54778), (610, 46696), (793, 35920), (898, 31720), (976, 29185), (1040, 27389), (1220, 23348), (1586, 17960), (1796, 15860), (2245, 12688), (2440, 11674), (3172, 8980), (3592, 7930), (3965, 7184), (4490, 6344), (4880, 5837)]