19762785

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{6971}}^1$

素因数の和:6995

約数の個数: 40

約数和(自身を含む): 40493376

約数和(自身を除く): 20730591

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 6971, 20913, 34855, 48797, 62739, 104565, 146391, 188217, 243985, 313695, 439173, 564651, 731955, 941085, 1317519, 2195865, 2823255, 3952557, 6587595, 19762785]

約数ペア:

[(1, 19762785), (3, 6587595), (5, 3952557), (7, 2823255), (9, 2195865), (15, 1317519), (21, 941085), (27, 731955), (35, 564651), (45, 439173), (63, 313695), (81, 243985), (105, 188217), (135, 146391), (189, 104565), (315, 62739), (405, 48797), (567, 34855), (945, 20913), (2835, 6971)]