21113001

素因数分解:

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

素因数の和:703

約数の個数: 48

約数和(自身を含む): 38766720

約数和(自身を除く): 17653719

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 169, 189, 273, 351, 507, 661, 819, 1183, 1521, 1983, 2457, 3549, 4563, 4627, 5949, 8593, 10647, 13881, 17847, 25779, 31941, 41643, 60151, 77337, 111709, 124929, 180453, 232011, 335127, 541359, 781963, 1005381, 1624077, 2345889, 3016143, 7037667, 21113001]

約数ペア:

[(1, 21113001), (3, 7037667), (7, 3016143), (9, 2345889), (13, 1624077), (21, 1005381), (27, 781963), (39, 541359), (63, 335127), (91, 232011), (117, 180453), (169, 124929), (189, 111709), (273, 77337), (351, 60151), (507, 41643), (661, 31941), (819, 25779), (1183, 17847), (1521, 13881), (1983, 10647), (2457, 8593), (3549, 5949), (4563, 4627)]