20554065

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2837}}^1$

素因数の和:2878

約数の個数: 48

約数和(自身を含む): 42501888

約数和(自身を除く): 21947823

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 63, 69, 105, 115, 161, 207, 315, 345, 483, 805, 1035, 1449, 2415, 2837, 7245, 8511, 14185, 19859, 25533, 42555, 59577, 65251, 99295, 127665, 178731, 195753, 297885, 326255, 456757, 587259, 893655, 978765, 1370271, 2283785, 2936295, 4110813, 6851355, 20554065]

約数ペア:

[(1, 20554065), (3, 6851355), (5, 4110813), (7, 2936295), (9, 2283785), (15, 1370271), (21, 978765), (23, 893655), (35, 587259), (45, 456757), (63, 326255), (69, 297885), (105, 195753), (115, 178731), (161, 127665), (207, 99295), (315, 65251), (345, 59577), (483, 42555), (805, 25533), (1035, 19859), (1449, 14185), (2415, 8511), (2837, 7245)]