72857421

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2281}}^1$

素因数の和:2323

約数の個数: 48

約数和(自身を含む): 133633920

約数和(自身を除く): 60776499

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 169, 189, 273, 351, 507, 819, 1183, 1521, 2281, 2457, 3549, 4563, 6843, 10647, 15967, 20529, 29653, 31941, 47901, 61587, 88959, 143703, 207571, 266877, 385489, 431109, 622713, 800631, 1156467, 1868139, 2698423, 3469401, 5604417, 8095269, 10408203, 24285807, 72857421]

約数ペア:

[(1, 72857421), (3, 24285807), (7, 10408203), (9, 8095269), (13, 5604417), (21, 3469401), (27, 2698423), (39, 1868139), (63, 1156467), (91, 800631), (117, 622713), (169, 431109), (189, 385489), (273, 266877), (351, 207571), (507, 143703), (819, 88959), (1183, 61587), (1521, 47901), (2281, 31941), (2457, 29653), (3549, 20529), (4563, 15967), (6843, 10647)]