620804780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1\times {\mathrm{1907}}^1$

素因数の和:2354

約数の個数: 48

約数和(自身を含む): 1339553376

約数和(自身を除く): 718748596

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 397, 410, 794, 820, 1588, 1907, 1985, 3814, 3970, 7628, 7940, 9535, 16277, 19070, 32554, 38140, 65108, 78187, 81385, 156374, 162770, 312748, 325540, 390935, 757079, 781870, 1514158, 1563740, 3028316, 3785395, 7570790, 15141580, 31040239, 62080478, 124160956, 155201195, 310402390, 620804780]

約数ペア:

[(1, 620804780), (2, 310402390), (4, 155201195), (5, 124160956), (10, 62080478), (20, 31040239), (41, 15141580), (82, 7570790), (164, 3785395), (205, 3028316), (397, 1563740), (410, 1514158), (794, 781870), (820, 757079), (1588, 390935), (1907, 325540), (1985, 312748), (3814, 162770), (3970, 156374), (7628, 81385), (7940, 78187), (9535, 65108), (16277, 38140), (19070, 32554)]