51130625

素因数分解:

$5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:100

約数の個数: 80

約数和(自身を含む): 83973120

約数和(自身を除く): 32842495

約数列:

[1, 5, 7, 13, 25, 29, 31, 35, 65, 91, 125, 145, 155, 175, 203, 217, 325, 377, 403, 455, 625, 725, 775, 875, 899, 1015, 1085, 1625, 1885, 2015, 2275, 2639, 2821, 3625, 3875, 4375, 4495, 5075, 5425, 6293, 8125, 9425, 10075, 11375, 11687, 13195, 14105, 18125, 19375, 22475, 25375, 27125, 31465, 47125, 50375, 56875, 58435, 65975, 70525, 81809, 112375, 126875, 135625, 157325, 235625, 251875, 292175, 329875, 352625, 409045, 561875, 786625, 1460875, 1649375, 1763125, 2045225, 3933125, 7304375, 10226125, 51130625]

約数ペア:

[(1, 51130625), (5, 10226125), (7, 7304375), (13, 3933125), (25, 2045225), (29, 1763125), (31, 1649375), (35, 1460875), (65, 786625), (91, 561875), (125, 409045), (145, 352625), (155, 329875), (175, 292175), (203, 251875), (217, 235625), (325, 157325), (377, 135625), (403, 126875), (455, 112375), (625, 81809), (725, 70525), (775, 65975), (875, 58435), (899, 56875), (1015, 50375), (1085, 47125), (1625, 31465), (1885, 27125), (2015, 25375), (2275, 22475), (2639, 19375), (2821, 18125), (3625, 14105), (3875, 13195), (4375, 11687), (4495, 11375), (5075, 10075), (5425, 9425), (6293, 8125)]