128293750

素因数分解:

$2^1\times 5^5\times {\mathrm{13}}^1\times {\mathrm{1579}}^1$

素因数の和:1619

約数の個数: 48

約数和(自身を含む): 259202160

約数和(自身を除く): 130908410

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1579, 1625, 3125, 3158, 3250, 6250, 7895, 8125, 15790, 16250, 20527, 39475, 40625, 41054, 78950, 81250, 102635, 197375, 205270, 394750, 513175, 986875, 1026350, 1973750, 2565875, 4934375, 5131750, 9868750, 12829375, 25658750, 64146875, 128293750]

約数ペア:

[(1, 128293750), (2, 64146875), (5, 25658750), (10, 12829375), (13, 9868750), (25, 5131750), (26, 4934375), (50, 2565875), (65, 1973750), (125, 1026350), (130, 986875), (250, 513175), (325, 394750), (625, 205270), (650, 197375), (1250, 102635), (1579, 81250), (1625, 78950), (3125, 41054), (3158, 40625), (3250, 39475), (6250, 20527), (7895, 16250), (8125, 15790)]