20708030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^2$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 44508960

約数和(自身を除く): 23800930

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 101, 145, 202, 203, 290, 406, 505, 707, 1010, 1015, 1414, 2030, 2929, 3535, 5858, 7070, 10201, 14645, 20402, 20503, 29290, 41006, 51005, 71407, 102010, 102515, 142814, 205030, 295829, 357035, 591658, 714070, 1479145, 2070803, 2958290, 4141606, 10354015, 20708030]

約数ペア:

[(1, 20708030), (2, 10354015), (5, 4141606), (7, 2958290), (10, 2070803), (14, 1479145), (29, 714070), (35, 591658), (58, 357035), (70, 295829), (101, 205030), (145, 142814), (202, 102515), (203, 102010), (290, 71407), (406, 51005), (505, 41006), (707, 29290), (1010, 20503), (1015, 20402), (1414, 14645), (2030, 10201), (2929, 7070), (3535, 5858)]