19767540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25343}}^1$

素因数の和:25368

約数の個数: 48

約数和(自身を含む): 59609088

約数和(自身を除く): 39841548

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, 25343, 50686, 76029, 101372, 126715, 152058, 253430, 304116, 329459, 380145, 506860, 658918, 760290, 988377, 1317836, 1520580, 1647295, 1976754, 3294590, 3953508, 4941885, 6589180, 9883770, 19767540]

約数ペア:

[(1, 19767540), (2, 9883770), (3, 6589180), (4, 4941885), (5, 3953508), (6, 3294590), (10, 1976754), (12, 1647295), (13, 1520580), (15, 1317836), (20, 988377), (26, 760290), (30, 658918), (39, 506860), (52, 380145), (60, 329459), (65, 304116), (78, 253430), (130, 152058), (156, 126715), (195, 101372), (260, 76029), (390, 50686), (780, 25343)]