20307790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{601}}^1$

素因数の和:748

約数の個数: 32

約数和(自身を含む): 38142720

約数和(自身を除く): 17834930

約数列:

[1, 2, 5, 10, 31, 62, 109, 155, 218, 310, 545, 601, 1090, 1202, 3005, 3379, 6010, 6758, 16895, 18631, 33790, 37262, 65509, 93155, 131018, 186310, 327545, 655090, 2030779, 4061558, 10153895, 20307790]

約数ペア:

[(1, 20307790), (2, 10153895), (5, 4061558), (10, 2030779), (31, 655090), (62, 327545), (109, 186310), (155, 131018), (218, 93155), (310, 65509), (545, 37262), (601, 33790), (1090, 18631), (1202, 16895), (3005, 6758), (3379, 6010)]