21279472

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13711}}^1$

素因数の和:13816

約数の個数: 20

約数和(自身を含む): 41657056

約数和(自身を除く): 20377584

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13711, 27422, 54844, 109688, 219376, 1329967, 2659934, 5319868, 10639736, 21279472]

約数ペア:

[(1, 21279472), (2, 10639736), (4, 5319868), (8, 2659934), (16, 1329967), (97, 219376), (194, 109688), (388, 54844), (776, 27422), (1552, 13711)]