21141778

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{421}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 38648448

約数和(自身を除く): 17506670

約数列:

[1, 2, 7, 14, 17, 34, 119, 211, 238, 421, 422, 842, 1477, 2947, 2954, 3587, 5894, 7157, 7174, 14314, 25109, 50099, 50218, 88831, 100198, 177662, 621817, 1243634, 1510127, 3020254, 10570889, 21141778]

約数ペア:

[(1, 21141778), (2, 10570889), (7, 3020254), (14, 1510127), (17, 1243634), (34, 621817), (119, 177662), (211, 100198), (238, 88831), (421, 50218), (422, 50099), (842, 25109), (1477, 14314), (2947, 7174), (2954, 7157), (3587, 5894)]