17886980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{457}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 40010880

約数和(自身を除く): 22123900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 380, 412, 457, 515, 914, 1030, 1828, 1957, 2060, 2285, 3914, 4570, 7828, 8683, 9140, 9785, 17366, 19570, 34732, 39140, 43415, 47071, 86830, 94142, 173660, 188284, 235355, 470710, 894349, 941420, 1788698, 3577396, 4471745, 8943490, 17886980]

約数ペア:

[(1, 17886980), (2, 8943490), (4, 4471745), (5, 3577396), (10, 1788698), (19, 941420), (20, 894349), (38, 470710), (76, 235355), (95, 188284), (103, 173660), (190, 94142), (206, 86830), (380, 47071), (412, 43415), (457, 39140), (515, 34732), (914, 19570), (1030, 17366), (1828, 9785), (1957, 9140), (2060, 8683), (2285, 7828), (3914, 4570)]