21368529

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 60

約数和(自身を含む): 39680256

約数和(自身を除く): 18311727

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 169, 189, 223, 273, 351, 507, 567, 669, 819, 1053, 1183, 1521, 1561, 2007, 2457, 2899, 3549, 4563, 4683, 6021, 7371, 8697, 10647, 13689, 14049, 18063, 20293, 26091, 31941, 37687, 42147, 60879, 78273, 95823, 113061, 126441, 182637, 234819, 263809, 339183, 547911, 791427, 1017549, 1643733, 2374281, 3052647, 7122843, 21368529]

約数ペア:

[(1, 21368529), (3, 7122843), (7, 3052647), (9, 2374281), (13, 1643733), (21, 1017549), (27, 791427), (39, 547911), (63, 339183), (81, 263809), (91, 234819), (117, 182637), (169, 126441), (189, 113061), (223, 95823), (273, 78273), (351, 60879), (507, 42147), (567, 37687), (669, 31941), (819, 26091), (1053, 20293), (1183, 18063), (1521, 14049), (1561, 13689), (2007, 10647), (2457, 8697), (2899, 7371), (3549, 6021), (4563, 4683)]