21557160

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:507

約数の個数: 96

約数和(自身を含む): 70635240

約数和(自身を除く): 49078080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 233, 257, 360, 466, 514, 699, 771, 932, 1028, 1165, 1285, 1398, 1542, 1864, 2056, 2097, 2313, 2330, 2570, 2796, 3084, 3495, 3855, 4194, 4626, 4660, 5140, 5592, 6168, 6990, 7710, 8388, 9252, 9320, 10280, 10485, 11565, 13980, 15420, 16776, 18504, 20970, 23130, 27960, 30840, 41940, 46260, 59881, 83880, 92520, 119762, 179643, 239524, 299405, 359286, 479048, 538929, 598810, 718572, 898215, 1077858, 1197620, 1437144, 1796430, 2155716, 2395240, 2694645, 3592860, 4311432, 5389290, 7185720, 10778580, 21557160]

約数ペア:

[(1, 21557160), (2, 10778580), (3, 7185720), (4, 5389290), (5, 4311432), (6, 3592860), (8, 2694645), (9, 2395240), (10, 2155716), (12, 1796430), (15, 1437144), (18, 1197620), (20, 1077858), (24, 898215), (30, 718572), (36, 598810), (40, 538929), (45, 479048), (60, 359286), (72, 299405), (90, 239524), (120, 179643), (180, 119762), (233, 92520), (257, 83880), (360, 59881), (466, 46260), (514, 41940), (699, 30840), (771, 27960), (932, 23130), (1028, 20970), (1165, 18504), (1285, 16776), (1398, 15420), (1542, 13980), (1864, 11565), (2056, 10485), (2097, 10280), (2313, 9320), (2330, 9252), (2570, 8388), (2796, 7710), (3084, 6990), (3495, 6168), (3855, 5592), (4194, 5140), (4626, 4660)]