18278871

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1163}}^1$

素因数の和:1223

約数の個数: 24

約数和(自身を含む): 27265536

約数和(自身を除く): 8986665

約数列:

[1, 3, 13, 31, 39, 93, 169, 403, 507, 1163, 1209, 3489, 5239, 15119, 15717, 36053, 45357, 108159, 196547, 468689, 589641, 1406067, 6092957, 18278871]

約数ペア:

[(1, 18278871), (3, 6092957), (13, 1406067), (31, 589641), (39, 468689), (93, 196547), (169, 108159), (403, 45357), (507, 36053), (1163, 15717), (1209, 15119), (3489, 5239)]