31891300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1621

約数の個数: 72

約数和(自身を含む): 81869760

約数和(自身を除く): 49978460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 1015, 1450, 1571, 2030, 2900, 3142, 4060, 5075, 6284, 7855, 10150, 10997, 15710, 20300, 21994, 31420, 39275, 43988, 45559, 54985, 78550, 91118, 109970, 157100, 182236, 219940, 227795, 274925, 318913, 455590, 549850, 637826, 911180, 1099700, 1138975, 1275652, 1594565, 2277950, 3189130, 4555900, 6378260, 7972825, 15945650, 31891300]

約数ペア:

[(1, 31891300), (2, 15945650), (4, 7972825), (5, 6378260), (7, 4555900), (10, 3189130), (14, 2277950), (20, 1594565), (25, 1275652), (28, 1138975), (29, 1099700), (35, 911180), (50, 637826), (58, 549850), (70, 455590), (100, 318913), (116, 274925), (140, 227795), (145, 219940), (175, 182236), (203, 157100), (290, 109970), (350, 91118), (406, 78550), (580, 54985), (700, 45559), (725, 43988), (812, 39275), (1015, 31420), (1450, 21994), (1571, 20300), (2030, 15710), (2900, 10997), (3142, 10150), (4060, 7855), (5075, 6284)]