389735580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499661}}^1$

素因数の和:499686

約数の個数: 48

約数和(自身を含む): 1175205024

約数和(自身を除く): 785469444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 499661, 999322, 1498983, 1998644, 2498305, 2997966, 4996610, 5995932, 6495593, 7494915, 9993220, 12991186, 14989830, 19486779, 25982372, 29979660, 32477965, 38973558, 64955930, 77947116, 97433895, 129911860, 194867790, 389735580]

約数ペア:

[(1, 389735580), (2, 194867790), (3, 129911860), (4, 97433895), (5, 77947116), (6, 64955930), (10, 38973558), (12, 32477965), (13, 29979660), (15, 25982372), (20, 19486779), (26, 14989830), (30, 12991186), (39, 9993220), (52, 7494915), (60, 6495593), (65, 5995932), (78, 4996610), (130, 2997966), (156, 2498305), (195, 1998644), (260, 1498983), (390, 999322), (780, 499661)]