21524943

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 33011712

約数和(自身を除く): 11486769

約数列:

[1, 3, 11, 31, 33, 53, 93, 159, 341, 397, 583, 1023, 1191, 1643, 1749, 4367, 4929, 12307, 13101, 18073, 21041, 36921, 54219, 63123, 135377, 231451, 406131, 652271, 694353, 1956813, 7174981, 21524943]

約数ペア:

[(1, 21524943), (3, 7174981), (11, 1956813), (31, 694353), (33, 652271), (53, 406131), (93, 231451), (159, 135377), (341, 63123), (397, 54219), (583, 36921), (1023, 21041), (1191, 18073), (1643, 13101), (1749, 12307), (4367, 4929)]