19913790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{51061}}^1$

素因数の和:51084

約数の個数: 32

約数和(自身を含む): 51470496

約数和(自身を除く): 31556706

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 51061, 102122, 153183, 255305, 306366, 510610, 663793, 765915, 1327586, 1531830, 1991379, 3318965, 3982758, 6637930, 9956895, 19913790]

約数ペア:

[(1, 19913790), (2, 9956895), (3, 6637930), (5, 3982758), (6, 3318965), (10, 1991379), (13, 1531830), (15, 1327586), (26, 765915), (30, 663793), (39, 510610), (65, 306366), (78, 255305), (130, 153183), (195, 102122), (390, 51061)]