21091284

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{18899}}^1$

素因数の和:18940

約数の個数: 36

約数和(自身を含む): 55036800

約数和(自身を除く): 33945516

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 186, 279, 372, 558, 1116, 18899, 37798, 56697, 75596, 113394, 170091, 226788, 340182, 585869, 680364, 1171738, 1757607, 2343476, 3515214, 5272821, 7030428, 10545642, 21091284]

約数ペア:

[(1, 21091284), (2, 10545642), (3, 7030428), (4, 5272821), (6, 3515214), (9, 2343476), (12, 1757607), (18, 1171738), (31, 680364), (36, 585869), (62, 340182), (93, 226788), (124, 170091), (186, 113394), (279, 75596), (372, 56697), (558, 37798), (1116, 18899)]