217872040

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{34693}}^1$

素因数の和:34861

約数の個数: 32

約数和(自身を含む): 493348680

約数和(自身を除く): 275476640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 34693, 69386, 138772, 173465, 277544, 346930, 693860, 1387720, 5446801, 10893602, 21787204, 27234005, 43574408, 54468010, 108936020, 217872040]

約数ペア:

[(1, 217872040), (2, 108936020), (4, 54468010), (5, 43574408), (8, 27234005), (10, 21787204), (20, 10893602), (40, 5446801), (157, 1387720), (314, 693860), (628, 346930), (785, 277544), (1256, 173465), (1570, 138772), (3140, 69386), (6280, 34693)]