21138502

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19609}}^1$

素因数の和:19636

約数の個数: 24

約数和(自身を含む): 40239720

約数和(自身を除く): 19101218

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19609, 39218, 137263, 215699, 274526, 431398, 960841, 1509893, 1921682, 3019786, 10569251, 21138502]

約数ペア:

[(1, 21138502), (2, 10569251), (7, 3019786), (11, 1921682), (14, 1509893), (22, 960841), (49, 431398), (77, 274526), (98, 215699), (154, 137263), (539, 39218), (1078, 19609)]