80857540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{547}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 179524800

約数和(自身を除く): 98667260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 389, 547, 778, 1094, 1556, 1945, 2188, 2735, 3890, 5470, 7391, 7780, 10393, 10940, 14782, 20786, 29564, 36955, 41572, 51965, 73910, 103930, 147820, 207860, 212783, 425566, 851132, 1063915, 2127830, 4042877, 4255660, 8085754, 16171508, 20214385, 40428770, 80857540]

約数ペア:

[(1, 80857540), (2, 40428770), (4, 20214385), (5, 16171508), (10, 8085754), (19, 4255660), (20, 4042877), (38, 2127830), (76, 1063915), (95, 851132), (190, 425566), (380, 212783), (389, 207860), (547, 147820), (778, 103930), (1094, 73910), (1556, 51965), (1945, 41572), (2188, 36955), (2735, 29564), (3890, 20786), (5470, 14782), (7391, 10940), (7780, 10393)]