128440570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 253440000

約数和(自身を除く): 124999430

約数列:

[1, 2, 5, 10, 19, 38, 43, 79, 86, 95, 158, 190, 199, 215, 395, 398, 430, 790, 817, 995, 1501, 1634, 1990, 3002, 3397, 3781, 4085, 6794, 7505, 7562, 8170, 8557, 15010, 15721, 16985, 17114, 18905, 31442, 33970, 37810, 42785, 64543, 78605, 85570, 129086, 157210, 162583, 298699, 322715, 325166, 597398, 645430, 676003, 812915, 1352006, 1493495, 1625830, 2986990, 3380015, 6760030, 12844057, 25688114, 64220285, 128440570]

約数ペア:

[(1, 128440570), (2, 64220285), (5, 25688114), (10, 12844057), (19, 6760030), (38, 3380015), (43, 2986990), (79, 1625830), (86, 1493495), (95, 1352006), (158, 812915), (190, 676003), (199, 645430), (215, 597398), (395, 325166), (398, 322715), (430, 298699), (790, 162583), (817, 157210), (995, 129086), (1501, 85570), (1634, 78605), (1990, 64543), (3002, 42785), (3397, 37810), (3781, 33970), (4085, 31442), (6794, 18905), (7505, 17114), (7562, 16985), (8170, 15721), (8557, 15010)]