18911880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1$

素因数の和:485

約数の個数: 160

約数和(自身を含む): 68607000

約数和(自身を除く): 49695120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 81, 90, 104, 108, 117, 120, 130, 135, 156, 162, 180, 195, 216, 234, 260, 270, 312, 324, 351, 360, 390, 405, 449, 468, 520, 540, 585, 648, 702, 780, 810, 898, 936, 1053, 1080, 1170, 1347, 1404, 1560, 1620, 1755, 1796, 2106, 2245, 2340, 2694, 2808, 3240, 3510, 3592, 4041, 4212, 4490, 4680, 5265, 5388, 5837, 6735, 7020, 8082, 8424, 8980, 10530, 10776, 11674, 12123, 13470, 14040, 16164, 17511, 17960, 20205, 21060, 23348, 24246, 26940, 29185, 32328, 35022, 36369, 40410, 42120, 46696, 48492, 52533, 53880, 58370, 60615, 70044, 72738, 80820, 87555, 96984, 105066, 116740, 121230, 140088, 145476, 157599, 161640, 175110, 181845, 210132, 233480, 242460, 262665, 290952, 315198, 350220, 363690, 420264, 472797, 484920, 525330, 630396, 700440, 727380, 787995, 945594, 1050660, 1260792, 1454760, 1575990, 1891188, 2101320, 2363985, 3151980, 3782376, 4727970, 6303960, 9455940, 18911880]

約数ペア:

[(1, 18911880), (2, 9455940), (3, 6303960), (4, 4727970), (5, 3782376), (6, 3151980), (8, 2363985), (9, 2101320), (10, 1891188), (12, 1575990), (13, 1454760), (15, 1260792), (18, 1050660), (20, 945594), (24, 787995), (26, 727380), (27, 700440), (30, 630396), (36, 525330), (39, 484920), (40, 472797), (45, 420264), (52, 363690), (54, 350220), (60, 315198), (65, 290952), (72, 262665), (78, 242460), (81, 233480), (90, 210132), (104, 181845), (108, 175110), (117, 161640), (120, 157599), (130, 145476), (135, 140088), (156, 121230), (162, 116740), (180, 105066), (195, 96984), (216, 87555), (234, 80820), (260, 72738), (270, 70044), (312, 60615), (324, 58370), (351, 53880), (360, 52533), (390, 48492), (405, 46696), (449, 42120), (468, 40410), (520, 36369), (540, 35022), (585, 32328), (648, 29185), (702, 26940), (780, 24246), (810, 23348), (898, 21060), (936, 20205), (1053, 17960), (1080, 17511), (1170, 16164), (1347, 14040), (1404, 13470), (1560, 12123), (1620, 11674), (1755, 10776), (1796, 10530), (2106, 8980), (2245, 8424), (2340, 8082), (2694, 7020), (2808, 6735), (3240, 5837), (3510, 5388), (3592, 5265), (4041, 4680), (4212, 4490)]