21504213

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{577}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 32189976

約数和(自身を除く): 10685763

約数列:

[1, 3, 9, 41, 101, 123, 303, 369, 577, 909, 1731, 4141, 5193, 12423, 23657, 37269, 58277, 70971, 174831, 212913, 524493, 2389357, 7168071, 21504213]

約数ペア:

[(1, 21504213), (3, 7168071), (9, 2389357), (41, 524493), (101, 212913), (123, 174831), (303, 70971), (369, 58277), (577, 37269), (909, 23657), (1731, 12423), (4141, 5193)]