20870900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{12277}}^1$

素因数の和:12308

約数の個数: 36

約数和(自身を含む): 47957868

約数和(自身を除く): 27086968

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 340, 425, 850, 1700, 12277, 24554, 49108, 61385, 122770, 208709, 245540, 306925, 417418, 613850, 834836, 1043545, 1227700, 2087090, 4174180, 5217725, 10435450, 20870900]

約数ペア:

[(1, 20870900), (2, 10435450), (4, 5217725), (5, 4174180), (10, 2087090), (17, 1227700), (20, 1043545), (25, 834836), (34, 613850), (50, 417418), (68, 306925), (85, 245540), (100, 208709), (170, 122770), (340, 61385), (425, 49108), (850, 24554), (1700, 12277)]