809888950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40193}}^1$

素因数の和:40249

約数の個数: 48

約数和(自身を含む): 1674642816

約数和(自身を除く): 864753866

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1550, 2015, 4030, 10075, 20150, 40193, 80386, 200965, 401930, 522509, 1004825, 1045018, 1245983, 2009650, 2491966, 2612545, 5225090, 6229915, 12459830, 13062725, 16197779, 26125450, 31149575, 32395558, 62299150, 80988895, 161977790, 404944475, 809888950]

約数ペア:

[(1, 809888950), (2, 404944475), (5, 161977790), (10, 80988895), (13, 62299150), (25, 32395558), (26, 31149575), (31, 26125450), (50, 16197779), (62, 13062725), (65, 12459830), (130, 6229915), (155, 5225090), (310, 2612545), (325, 2491966), (403, 2009650), (650, 1245983), (775, 1045018), (806, 1004825), (1550, 522509), (2015, 401930), (4030, 200965), (10075, 80386), (20150, 40193)]