18678400

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^1\times {\mathrm{449}}^1$

素因数の和:486

約数の個数: 96

約数和(自身を含む): 49801500

約数和(自身を除く): 31123100

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 260, 320, 325, 400, 416, 449, 520, 640, 650, 800, 832, 898, 1040, 1300, 1600, 1664, 1796, 2080, 2245, 2600, 3200, 3592, 4160, 4490, 5200, 5837, 7184, 8320, 8980, 10400, 11225, 11674, 14368, 17960, 20800, 22450, 23348, 28736, 29185, 35920, 41600, 44900, 46696, 57472, 58370, 71840, 89800, 93392, 116740, 143680, 145925, 179600, 186784, 233480, 287360, 291850, 359200, 373568, 466960, 583700, 718400, 747136, 933920, 1167400, 1436800, 1867840, 2334800, 3735680, 4669600, 9339200, 18678400]

約数ペア:

[(1, 18678400), (2, 9339200), (4, 4669600), (5, 3735680), (8, 2334800), (10, 1867840), (13, 1436800), (16, 1167400), (20, 933920), (25, 747136), (26, 718400), (32, 583700), (40, 466960), (50, 373568), (52, 359200), (64, 291850), (65, 287360), (80, 233480), (100, 186784), (104, 179600), (128, 145925), (130, 143680), (160, 116740), (200, 93392), (208, 89800), (260, 71840), (320, 58370), (325, 57472), (400, 46696), (416, 44900), (449, 41600), (520, 35920), (640, 29185), (650, 28736), (800, 23348), (832, 22450), (898, 20800), (1040, 17960), (1300, 14368), (1600, 11674), (1664, 11225), (1796, 10400), (2080, 8980), (2245, 8320), (2600, 7184), (3200, 5837), (3592, 5200), (4160, 4490)]