641025

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1$

素因数の和:71

約数の個数: 72

約数和(自身を含む): 1470144

約数和(自身を除く): 829119

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 33, 35, 37, 45, 55, 63, 75, 77, 99, 105, 111, 165, 175, 185, 225, 231, 259, 275, 315, 333, 385, 407, 495, 525, 555, 693, 777, 825, 925, 1155, 1221, 1295, 1575, 1665, 1925, 2035, 2331, 2475, 2775, 2849, 3465, 3663, 3885, 5775, 6105, 6475, 8325, 8547, 10175, 11655, 14245, 17325, 18315, 19425, 25641, 30525, 42735, 58275, 71225, 91575, 128205, 213675, 641025]

約数ペア:

[(1, 641025), (3, 213675), (5, 128205), (7, 91575), (9, 71225), (11, 58275), (15, 42735), (21, 30525), (25, 25641), (33, 19425), (35, 18315), (37, 17325), (45, 14245), (55, 11655), (63, 10175), (75, 8547), (77, 8325), (99, 6475), (105, 6105), (111, 5775), (165, 3885), (175, 3663), (185, 3465), (225, 2849), (231, 2775), (259, 2475), (275, 2331), (315, 2035), (333, 1925), (385, 1665), (407, 1575), (495, 1295), (525, 1221), (555, 1155), (693, 925), (777, 825)]