21000655196

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{41801}}^1$

素因数の和:41966

約数の個数: 48

約数和(自身を含む): 39186866880

約数和(自身を除く): 18186211684

約数列:

[1, 2, 4, 29, 58, 61, 71, 116, 122, 142, 244, 284, 1769, 2059, 3538, 4118, 4331, 7076, 8236, 8662, 17324, 41801, 83602, 125599, 167204, 251198, 502396, 1212229, 2424458, 2549861, 2967871, 4848916, 5099722, 5935742, 10199444, 11871484, 73945969, 86068259, 147891938, 172136518, 181040131, 295783876, 344273036, 362080262, 724160524, 5250163799, 10500327598, 21000655196]

約数ペア:

[(1, 21000655196), (2, 10500327598), (4, 5250163799), (29, 724160524), (58, 362080262), (61, 344273036), (71, 295783876), (116, 181040131), (122, 172136518), (142, 147891938), (244, 86068259), (284, 73945969), (1769, 11871484), (2059, 10199444), (3538, 5935742), (4118, 5099722), (4331, 4848916), (7076, 2967871), (8236, 2549861), (8662, 2424458), (17324, 1212229), (41801, 502396), (83602, 251198), (125599, 167204)]