20450560390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{28817}}^1$

素因数の和:28993

約数の個数: 64

約数和(自身を含む): 40784155776

約数和(自身を除く): 20333595386

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 103, 106, 130, 206, 265, 515, 530, 689, 1030, 1339, 1378, 2678, 3445, 5459, 6695, 6890, 10918, 13390, 27295, 28817, 54590, 57634, 70967, 141934, 144085, 288170, 354835, 374621, 709670, 749242, 1527301, 1873105, 2968151, 3054602, 3746210, 5936302, 7636505, 14840755, 15273010, 19854913, 29681510, 38585963, 39709826, 77171926, 99274565, 157312003, 192929815, 198549130, 314624006, 385859630, 786560015, 1573120030, 2045056039, 4090112078, 10225280195, 20450560390]

約数ペア:

[(1, 20450560390), (2, 10225280195), (5, 4090112078), (10, 2045056039), (13, 1573120030), (26, 786560015), (53, 385859630), (65, 314624006), (103, 198549130), (106, 192929815), (130, 157312003), (206, 99274565), (265, 77171926), (515, 39709826), (530, 38585963), (689, 29681510), (1030, 19854913), (1339, 15273010), (1378, 14840755), (2678, 7636505), (3445, 5936302), (5459, 3746210), (6695, 3054602), (6890, 2968151), (10918, 1873105), (13390, 1527301), (27295, 749242), (28817, 709670), (54590, 374621), (57634, 354835), (70967, 288170), (141934, 144085)]