20631625

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:131

約数の個数: 64

約数和(自身を含む): 33246720

約数和(自身を除く): 12615095

約数列:

[1, 5, 7, 17, 19, 25, 35, 73, 85, 95, 119, 125, 133, 175, 323, 365, 425, 475, 511, 595, 665, 875, 1241, 1387, 1615, 1825, 2125, 2261, 2375, 2555, 2975, 3325, 6205, 6935, 8075, 8687, 9125, 9709, 11305, 12775, 14875, 16625, 23579, 31025, 34675, 40375, 43435, 48545, 56525, 63875, 117895, 155125, 165053, 173375, 217175, 242725, 282625, 589475, 825265, 1085875, 1213625, 2947375, 4126325, 20631625]

約数ペア:

[(1, 20631625), (5, 4126325), (7, 2947375), (17, 1213625), (19, 1085875), (25, 825265), (35, 589475), (73, 282625), (85, 242725), (95, 217175), (119, 173375), (125, 165053), (133, 155125), (175, 117895), (323, 63875), (365, 56525), (425, 48545), (475, 43435), (511, 40375), (595, 34675), (665, 31025), (875, 23579), (1241, 16625), (1387, 14875), (1615, 12775), (1825, 11305), (2125, 9709), (2261, 9125), (2375, 8687), (2555, 8075), (2975, 6935), (3325, 6205)]