20783620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{43}}^1$

素因数の和:102

約数の個数: 96

約数和(自身を含む): 52778880

約数和(自身を除く): 31995260

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 43, 44, 52, 55, 65, 86, 110, 130, 143, 169, 172, 215, 220, 260, 286, 338, 430, 473, 559, 572, 676, 715, 845, 860, 946, 1118, 1430, 1690, 1859, 1892, 2197, 2236, 2365, 2795, 2860, 3380, 3718, 4394, 4730, 5590, 6149, 7267, 7436, 8788, 9295, 9460, 10985, 11180, 12298, 14534, 18590, 21970, 24167, 24596, 29068, 30745, 36335, 37180, 43940, 48334, 61490, 72670, 79937, 94471, 96668, 120835, 122980, 145340, 159874, 188942, 241670, 319748, 377884, 399685, 472355, 483340, 799370, 944710, 1039181, 1598740, 1889420, 2078362, 4156724, 5195905, 10391810, 20783620]

約数ペア:

[(1, 20783620), (2, 10391810), (4, 5195905), (5, 4156724), (10, 2078362), (11, 1889420), (13, 1598740), (20, 1039181), (22, 944710), (26, 799370), (43, 483340), (44, 472355), (52, 399685), (55, 377884), (65, 319748), (86, 241670), (110, 188942), (130, 159874), (143, 145340), (169, 122980), (172, 120835), (215, 96668), (220, 94471), (260, 79937), (286, 72670), (338, 61490), (430, 48334), (473, 43940), (559, 37180), (572, 36335), (676, 30745), (715, 29068), (845, 24596), (860, 24167), (946, 21970), (1118, 18590), (1430, 14534), (1690, 12298), (1859, 11180), (1892, 10985), (2197, 9460), (2236, 9295), (2365, 8788), (2795, 7436), (2860, 7267), (3380, 6149), (3718, 5590), (4394, 4730)]