21118158

素因数分解:

$2^1\times 3^5\times {\mathrm{19}}^1\times {\mathrm{2287}}^1$

素因数の和:2323

約数の個数: 48

約数和(自身を含む): 49969920

約数和(自身を除く): 28851762

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 243, 342, 486, 513, 1026, 1539, 2287, 3078, 4574, 4617, 6861, 9234, 13722, 20583, 41166, 43453, 61749, 86906, 123498, 130359, 185247, 260718, 370494, 391077, 555741, 782154, 1111482, 1173231, 2346462, 3519693, 7039386, 10559079, 21118158]

約数ペア:

[(1, 21118158), (2, 10559079), (3, 7039386), (6, 3519693), (9, 2346462), (18, 1173231), (19, 1111482), (27, 782154), (38, 555741), (54, 391077), (57, 370494), (81, 260718), (114, 185247), (162, 130359), (171, 123498), (243, 86906), (342, 61749), (486, 43453), (513, 41166), (1026, 20583), (1539, 13722), (2287, 9234), (3078, 6861), (4574, 4617)]