21476205

素因数分解:

$3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{619}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 38390400

約数和(自身を除く): 16914195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 257, 619, 771, 1285, 1857, 2313, 3095, 3855, 5571, 6939, 9285, 11565, 16713, 27855, 34695, 83565, 159083, 477249, 795415, 1431747, 2386245, 4295241, 7158735, 21476205]

約数ペア:

[(1, 21476205), (3, 7158735), (5, 4295241), (9, 2386245), (15, 1431747), (27, 795415), (45, 477249), (135, 159083), (257, 83565), (619, 34695), (771, 27855), (1285, 16713), (1857, 11565), (2313, 9285), (3095, 6939), (3855, 5571)]