20079340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 24119444

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 410, 470, 521, 820, 940, 1042, 1927, 2084, 2605, 3854, 5210, 7708, 9635, 10420, 19270, 21361, 24487, 38540, 42722, 48974, 85444, 97948, 106805, 122435, 213610, 244870, 427220, 489740, 1003967, 2007934, 4015868, 5019835, 10039670, 20079340]

約数ペア:

[(1, 20079340), (2, 10039670), (4, 5019835), (5, 4015868), (10, 2007934), (20, 1003967), (41, 489740), (47, 427220), (82, 244870), (94, 213610), (164, 122435), (188, 106805), (205, 97948), (235, 85444), (410, 48974), (470, 42722), (521, 38540), (820, 24487), (940, 21361), (1042, 19270), (1927, 10420), (2084, 9635), (2605, 7708), (3854, 5210)]