19517420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{277}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 44462208

約数和(自身を除く): 24944788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 271, 277, 542, 554, 1084, 1108, 1355, 1385, 2710, 2770, 3523, 3601, 5420, 5540, 7046, 7202, 14092, 14404, 17615, 18005, 35230, 36010, 70460, 72020, 75067, 150134, 300268, 375335, 750670, 975871, 1501340, 1951742, 3903484, 4879355, 9758710, 19517420]

約数ペア:

[(1, 19517420), (2, 9758710), (4, 4879355), (5, 3903484), (10, 1951742), (13, 1501340), (20, 975871), (26, 750670), (52, 375335), (65, 300268), (130, 150134), (260, 75067), (271, 72020), (277, 70460), (542, 36010), (554, 35230), (1084, 18005), (1108, 17615), (1355, 14404), (1385, 14092), (2710, 7202), (2770, 7046), (3523, 5540), (3601, 5420)]