20175555625

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{7949}}^1$

素因数の和:8131

約数の個数: 40

約数和(自身を含む): 26226604800

約数和(自身を除く): 6051049175

約数列:

[1, 5, 25, 31, 125, 131, 155, 625, 655, 775, 3275, 3875, 4061, 7949, 16375, 19375, 20305, 39745, 81875, 101525, 198725, 246419, 507625, 993625, 1041319, 1232095, 2538125, 4968125, 5206595, 6160475, 26032975, 30802375, 32280889, 130164875, 154011875, 161404445, 650824375, 807022225, 4035111125, 20175555625]

約数ペア:

[(1, 20175555625), (5, 4035111125), (25, 807022225), (31, 650824375), (125, 161404445), (131, 154011875), (155, 130164875), (625, 32280889), (655, 30802375), (775, 26032975), (3275, 6160475), (3875, 5206595), (4061, 4968125), (7949, 2538125), (16375, 1232095), (19375, 1041319), (20305, 993625), (39745, 507625), (81875, 246419), (101525, 198725)]