21271161639

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{208891}}^1$

素因数の和:209287

約数の個数: 32

約数和(自身を含む): 35000272384

約数和(自身を除く): 13729110745

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 373, 1119, 2611, 4849, 7833, 14547, 33943, 101829, 208891, 626673, 1462237, 2715583, 4386711, 8146749, 19009081, 57027243, 77916343, 233749029, 545414401, 1012912459, 1636243203, 3038737377, 7090387213, 21271161639]

約数ペア:

[(1, 21271161639), (3, 7090387213), (7, 3038737377), (13, 1636243203), (21, 1012912459), (39, 545414401), (91, 233749029), (273, 77916343), (373, 57027243), (1119, 19009081), (2611, 8146749), (4849, 4386711), (7833, 2715583), (14547, 1462237), (33943, 626673), (101829, 208891)]