20970520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30839}}^1$

素因数の和:30867

約数の個数: 32

約数和(自身を含む): 49960800

約数和(自身を除く): 28990280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30839, 61678, 123356, 154195, 246712, 308390, 524263, 616780, 1048526, 1233560, 2097052, 2621315, 4194104, 5242630, 10485260, 20970520]

約数ペア:

[(1, 20970520), (2, 10485260), (4, 5242630), (5, 4194104), (8, 2621315), (10, 2097052), (17, 1233560), (20, 1048526), (34, 616780), (40, 524263), (68, 308390), (85, 246712), (136, 154195), (170, 123356), (340, 61678), (680, 30839)]