20854865660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2897}}^1\times {\mathrm{8779}}^1$

素因数の和:11726

約数の個数: 48

約数和(自身を含む): 44883992160

約数和(自身を除く): 24029126500

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2897, 5794, 8779, 11588, 14485, 17558, 28970, 35116, 43895, 57940, 87790, 118777, 175580, 237554, 359939, 475108, 593885, 719878, 1187770, 1439756, 1799695, 2375540, 3599390, 7198780, 25432763, 50865526, 101731052, 127163815, 254327630, 508655260, 1042743283, 2085486566, 4170973132, 5213716415, 10427432830, 20854865660]

約数ペア:

[(1, 20854865660), (2, 10427432830), (4, 5213716415), (5, 4170973132), (10, 2085486566), (20, 1042743283), (41, 508655260), (82, 254327630), (164, 127163815), (205, 101731052), (410, 50865526), (820, 25432763), (2897, 7198780), (5794, 3599390), (8779, 2375540), (11588, 1799695), (14485, 1439756), (17558, 1187770), (28970, 719878), (35116, 593885), (43895, 475108), (57940, 359939), (87790, 237554), (118777, 175580)]