21536020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1847}}^1$

素因数の和:1920

約数の個数: 48

約数和(自身を含む): 50295168

約数和(自身を除く): 28759148

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1847, 2332, 2915, 3694, 5830, 7388, 9235, 11660, 18470, 20317, 36940, 40634, 81268, 97891, 101585, 195782, 203170, 391564, 406340, 489455, 978910, 1076801, 1957820, 2153602, 4307204, 5384005, 10768010, 21536020]

約数ペア:

[(1, 21536020), (2, 10768010), (4, 5384005), (5, 4307204), (10, 2153602), (11, 1957820), (20, 1076801), (22, 978910), (44, 489455), (53, 406340), (55, 391564), (106, 203170), (110, 195782), (212, 101585), (220, 97891), (265, 81268), (530, 40634), (583, 36940), (1060, 20317), (1166, 18470), (1847, 11660), (2332, 9235), (2915, 7388), (3694, 5830)]