20076665

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 28615680

約数和(自身を除く): 8539015

約数列:

[1, 5, 7, 35, 53, 79, 137, 265, 371, 395, 553, 685, 959, 1855, 2765, 4187, 4795, 7261, 10823, 20935, 29309, 36305, 50827, 54115, 75761, 146545, 254135, 378805, 573619, 2868095, 4015333, 20076665]

約数ペア:

[(1, 20076665), (5, 4015333), (7, 2868095), (35, 573619), (53, 378805), (79, 254135), (137, 146545), (265, 75761), (371, 54115), (395, 50827), (553, 36305), (685, 29309), (959, 20935), (1855, 10823), (2765, 7261), (4187, 4795)]