21656565

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7639}}^1$

素因数の和:7663

約数の個数: 40

約数和(自身を含む): 44373120

約数和(自身を除く): 22716555

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7639, 22917, 38195, 53473, 68751, 114585, 160419, 206253, 267365, 343755, 481257, 618759, 802095, 1031265, 1443771, 2406285, 3093795, 4331313, 7218855, 21656565]

約数ペア:

[(1, 21656565), (3, 7218855), (5, 4331313), (7, 3093795), (9, 2406285), (15, 1443771), (21, 1031265), (27, 802095), (35, 618759), (45, 481257), (63, 343755), (81, 267365), (105, 206253), (135, 160419), (189, 114585), (315, 68751), (405, 53473), (567, 38195), (945, 22917), (2835, 7639)]