221489163

素因数分解:

$3^2\times 7^3\times {\mathrm{157}}^1\times {\mathrm{457}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 376292800

約数和(自身を除く): 154803637

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 157, 343, 441, 457, 471, 1029, 1099, 1371, 1413, 3087, 3199, 3297, 4113, 7693, 9597, 9891, 22393, 23079, 28791, 53851, 67179, 69237, 71749, 156751, 161553, 201537, 215247, 470253, 484659, 502243, 645741, 1410759, 1506729, 3515701, 4520187, 10547103, 24609907, 31641309, 73829721, 221489163]

約数ペア:

[(1, 221489163), (3, 73829721), (7, 31641309), (9, 24609907), (21, 10547103), (49, 4520187), (63, 3515701), (147, 1506729), (157, 1410759), (343, 645741), (441, 502243), (457, 484659), (471, 470253), (1029, 215247), (1099, 201537), (1371, 161553), (1413, 156751), (3087, 71749), (3199, 69237), (3297, 67179), (4113, 53851), (7693, 28791), (9597, 23079), (9891, 22393)]