21131955

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12041}}^1$

素因数の和:12068

約数の個数: 32

約数和(自身を含む): 40461120

約数和(自身を除く): 19329165

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 12041, 36123, 60205, 108369, 156533, 180615, 325107, 469599, 541845, 782665, 1408797, 1625535, 2347995, 4226391, 7043985, 21131955]

約数ペア:

[(1, 21131955), (3, 7043985), (5, 4226391), (9, 2347995), (13, 1625535), (15, 1408797), (27, 782665), (39, 541845), (45, 469599), (65, 325107), (117, 180615), (135, 156533), (195, 108369), (351, 60205), (585, 36123), (1755, 12041)]