20987358

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{17231}}^1$

素因数の和:17272

約数の個数: 32

約数和(自身を含む): 49628160

約数和(自身を除く): 28640802

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 87, 174, 203, 406, 609, 1218, 17231, 34462, 51693, 103386, 120617, 241234, 361851, 499699, 723702, 999398, 1499097, 2998194, 3497893, 6995786, 10493679, 20987358]

約数ペア:

[(1, 20987358), (2, 10493679), (3, 6995786), (6, 3497893), (7, 2998194), (14, 1499097), (21, 999398), (29, 723702), (42, 499699), (58, 361851), (87, 241234), (174, 120617), (203, 103386), (406, 51693), (609, 34462), (1218, 17231)]