21013335

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3511}}^1$

素因数の和:3548

約数の個数: 48

約数和(自身を含む): 43829760

約数和(自身を除く): 22816425

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3511, 5985, 10533, 17555, 24577, 31599, 52665, 66709, 73731, 122885, 157995, 200127, 221193, 333545, 368655, 466963, 600381, 1000635, 1105965, 1400889, 2334815, 3001905, 4202667, 7004445, 21013335]

約数ペア:

[(1, 21013335), (3, 7004445), (5, 4202667), (7, 3001905), (9, 2334815), (15, 1400889), (19, 1105965), (21, 1000635), (35, 600381), (45, 466963), (57, 368655), (63, 333545), (95, 221193), (105, 200127), (133, 157995), (171, 122885), (285, 73731), (315, 66709), (399, 52665), (665, 31599), (855, 24577), (1197, 17555), (1995, 10533), (3511, 5985)]