21685642

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2521}}^1$

素因数の和:2574

約数の個数: 32

約数和(自身を含む): 39222144

約数和(自身を除く): 17536502

約数列:

[1, 2, 11, 17, 22, 23, 34, 46, 187, 253, 374, 391, 506, 782, 2521, 4301, 5042, 8602, 27731, 42857, 55462, 57983, 85714, 115966, 471427, 637813, 942854, 985711, 1275626, 1971422, 10842821, 21685642]

約数ペア:

[(1, 21685642), (2, 10842821), (11, 1971422), (17, 1275626), (22, 985711), (23, 942854), (34, 637813), (46, 471427), (187, 115966), (253, 85714), (374, 57983), (391, 55462), (506, 42857), (782, 27731), (2521, 8602), (4301, 5042)]