19977125

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 48

約数和(自身を含む): 30650880

約数和(自身を除く): 10673755

約数列:

[1, 5, 7, 17, 25, 35, 79, 85, 119, 125, 175, 289, 395, 425, 553, 595, 875, 1343, 1445, 1975, 2023, 2125, 2765, 2975, 6715, 7225, 9401, 9875, 10115, 13825, 14875, 22831, 33575, 36125, 47005, 50575, 69125, 114155, 159817, 167875, 235025, 252875, 570775, 799085, 1175125, 2853875, 3995425, 19977125]

約数ペア:

[(1, 19977125), (5, 3995425), (7, 2853875), (17, 1175125), (25, 799085), (35, 570775), (79, 252875), (85, 235025), (119, 167875), (125, 159817), (175, 114155), (289, 69125), (395, 50575), (425, 47005), (553, 36125), (595, 33575), (875, 22831), (1343, 14875), (1445, 13825), (1975, 10115), (2023, 9875), (2125, 9401), (2765, 7225), (2975, 6715)]