20786750

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 42389568

約数和(自身を除く): 21602818

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 67, 73, 85, 125, 134, 146, 170, 250, 335, 365, 425, 670, 730, 850, 1139, 1241, 1675, 1825, 2125, 2278, 2482, 3350, 3650, 4250, 4891, 5695, 6205, 8375, 9125, 9782, 11390, 12410, 16750, 18250, 24455, 28475, 31025, 48910, 56950, 62050, 83147, 122275, 142375, 155125, 166294, 244550, 284750, 310250, 415735, 611375, 831470, 1222750, 2078675, 4157350, 10393375, 20786750]

約数ペア:

[(1, 20786750), (2, 10393375), (5, 4157350), (10, 2078675), (17, 1222750), (25, 831470), (34, 611375), (50, 415735), (67, 310250), (73, 284750), (85, 244550), (125, 166294), (134, 155125), (146, 142375), (170, 122275), (250, 83147), (335, 62050), (365, 56950), (425, 48910), (670, 31025), (730, 28475), (850, 24455), (1139, 18250), (1241, 16750), (1675, 12410), (1825, 11390), (2125, 9782), (2278, 9125), (2482, 8375), (3350, 6205), (3650, 5695), (4250, 4891)]