20776525

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 32997888

約数和(自身を除く): 12221363

約数列:

[1, 5, 7, 11, 25, 35, 43, 55, 77, 175, 215, 251, 275, 301, 385, 473, 1075, 1255, 1505, 1757, 1925, 2365, 2761, 3311, 6275, 7525, 8785, 10793, 11825, 13805, 16555, 19327, 43925, 53965, 69025, 75551, 82775, 96635, 118723, 269825, 377755, 483175, 593615, 831061, 1888775, 2968075, 4155305, 20776525]

約数ペア:

[(1, 20776525), (5, 4155305), (7, 2968075), (11, 1888775), (25, 831061), (35, 593615), (43, 483175), (55, 377755), (77, 269825), (175, 118723), (215, 96635), (251, 82775), (275, 75551), (301, 69025), (385, 53965), (473, 43925), (1075, 19327), (1255, 16555), (1505, 13805), (1757, 11825), (1925, 10793), (2365, 8785), (2761, 7525), (3311, 6275)]