21330452

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23122348

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 89, 143, 178, 286, 356, 419, 572, 838, 979, 1157, 1676, 1958, 2314, 3916, 4609, 4628, 5447, 9218, 10894, 12727, 18436, 21788, 25454, 37291, 50908, 59917, 74582, 119834, 149164, 239668, 410201, 484783, 820402, 969566, 1640804, 1939132, 5332613, 10665226, 21330452]

約数ペア:

[(1, 21330452), (2, 10665226), (4, 5332613), (11, 1939132), (13, 1640804), (22, 969566), (26, 820402), (44, 484783), (52, 410201), (89, 239668), (143, 149164), (178, 119834), (286, 74582), (356, 59917), (419, 50908), (572, 37291), (838, 25454), (979, 21788), (1157, 18436), (1676, 12727), (1958, 10894), (2314, 9218), (3916, 5447), (4609, 4628)]