20306380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 44593920

約数和(自身を除く): 24287540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 157, 223, 290, 314, 446, 580, 628, 785, 892, 1115, 1570, 2230, 3140, 4460, 4553, 6467, 9106, 12934, 18212, 22765, 25868, 32335, 35011, 45530, 64670, 70022, 91060, 129340, 140044, 175055, 350110, 700220, 1015319, 2030638, 4061276, 5076595, 10153190, 20306380]

約数ペア:

[(1, 20306380), (2, 10153190), (4, 5076595), (5, 4061276), (10, 2030638), (20, 1015319), (29, 700220), (58, 350110), (116, 175055), (145, 140044), (157, 129340), (223, 91060), (290, 70022), (314, 64670), (446, 45530), (580, 35011), (628, 32335), (785, 25868), (892, 22765), (1115, 18212), (1570, 12934), (2230, 9106), (3140, 6467), (4460, 4553)]