18686720

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1123}}^1$

素因数の和:1157

約数の個数: 72

約数和(自身を含む): 48246576

約数和(自身を除く): 29559856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1123, 1280, 1664, 2080, 2246, 3328, 4160, 4492, 5615, 8320, 8984, 11230, 14599, 16640, 17968, 22460, 29198, 35936, 44920, 58396, 71872, 72995, 89840, 116792, 143744, 145990, 179680, 233584, 287488, 291980, 359360, 467168, 583960, 718720, 934336, 1167920, 1437440, 1868672, 2335840, 3737344, 4671680, 9343360, 18686720]

約数ペア:

[(1, 18686720), (2, 9343360), (4, 4671680), (5, 3737344), (8, 2335840), (10, 1868672), (13, 1437440), (16, 1167920), (20, 934336), (26, 718720), (32, 583960), (40, 467168), (52, 359360), (64, 291980), (65, 287488), (80, 233584), (104, 179680), (128, 145990), (130, 143744), (160, 116792), (208, 89840), (256, 72995), (260, 71872), (320, 58396), (416, 44920), (520, 35936), (640, 29198), (832, 22460), (1040, 17968), (1123, 16640), (1280, 14599), (1664, 11230), (2080, 8984), (2246, 8320), (3328, 5615), (4160, 4492)]