4220223

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1511}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 6894720

約数和(自身を除く): 2674497

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 1511, 2793, 4533, 10577, 28709, 31731, 74039, 86127, 200963, 222117, 602889, 1406741, 4220223]

約数ペア:

[(1, 4220223), (3, 1406741), (7, 602889), (19, 222117), (21, 200963), (49, 86127), (57, 74039), (133, 31731), (147, 28709), (399, 10577), (931, 4533), (1511, 2793)]