19757080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1780

約数の個数: 64

約数和(自身を含む): 52073280

約数和(自身を除く): 32316200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1721, 2296, 2870, 3442, 5740, 6884, 8605, 11480, 12047, 13768, 17210, 24094, 34420, 48188, 60235, 68840, 70561, 96376, 120470, 141122, 240940, 282244, 352805, 481880, 493927, 564488, 705610, 987854, 1411220, 1975708, 2469635, 2822440, 3951416, 4939270, 9878540, 19757080]

約数ペア:

[(1, 19757080), (2, 9878540), (4, 4939270), (5, 3951416), (7, 2822440), (8, 2469635), (10, 1975708), (14, 1411220), (20, 987854), (28, 705610), (35, 564488), (40, 493927), (41, 481880), (56, 352805), (70, 282244), (82, 240940), (140, 141122), (164, 120470), (205, 96376), (280, 70561), (287, 68840), (328, 60235), (410, 48188), (574, 34420), (820, 24094), (1148, 17210), (1435, 13768), (1640, 12047), (1721, 11480), (2296, 8605), (2870, 6884), (3442, 5740)]