19455540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24943}}^1$

素因数の和:24968

約数の個数: 48

約数和(自身を含む): 58668288

約数和(自身を除く): 39212748

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, 24943, 49886, 74829, 99772, 124715, 149658, 249430, 299316, 324259, 374145, 498860, 648518, 748290, 972777, 1297036, 1496580, 1621295, 1945554, 3242590, 3891108, 4863885, 6485180, 9727770, 19455540]

約数ペア:

[(1, 19455540), (2, 9727770), (3, 6485180), (4, 4863885), (5, 3891108), (6, 3242590), (10, 1945554), (12, 1621295), (13, 1496580), (15, 1297036), (20, 972777), (26, 748290), (30, 648518), (39, 498860), (52, 374145), (60, 324259), (65, 299316), (78, 249430), (130, 149658), (156, 124715), (195, 99772), (260, 74829), (390, 49886), (780, 24943)]