16421223

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{661}}^1$

素因数の和:704

約数の個数: 36

約数和(自身を含む): 27621288

約数和(自身を除く): 11200065

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 507, 637, 661, 1183, 1911, 1983, 3549, 4627, 8281, 8593, 13881, 24843, 25779, 32389, 60151, 97167, 111709, 180453, 335127, 421057, 781963, 1263171, 2345889, 5473741, 16421223]

約数ペア:

[(1, 16421223), (3, 5473741), (7, 2345889), (13, 1263171), (21, 781963), (39, 421057), (49, 335127), (91, 180453), (147, 111709), (169, 97167), (273, 60151), (507, 32389), (637, 25779), (661, 24843), (1183, 13881), (1911, 8593), (1983, 8281), (3549, 4627)]