1283750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:114

約数の個数: 40

約数和(自身を含む): 2624160

約数和(自身を除く): 1340410

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 79, 125, 130, 158, 250, 325, 395, 625, 650, 790, 1027, 1250, 1625, 1975, 2054, 3250, 3950, 5135, 8125, 9875, 10270, 16250, 19750, 25675, 49375, 51350, 98750, 128375, 256750, 641875, 1283750]

約数ペア:

[(1, 1283750), (2, 641875), (5, 256750), (10, 128375), (13, 98750), (25, 51350), (26, 49375), (50, 25675), (65, 19750), (79, 16250), (125, 10270), (130, 9875), (158, 8125), (250, 5135), (325, 3950), (395, 3250), (625, 2054), (650, 1975), (790, 1625), (1027, 1250)]