21417555

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 35290368

約数和(自身を除く): 13872813

約数列:

[1, 3, 5, 15, 67, 101, 201, 211, 303, 335, 505, 633, 1005, 1055, 1515, 3165, 6767, 14137, 20301, 21311, 33835, 42411, 63933, 70685, 101505, 106555, 212055, 319665, 1427837, 4283511, 7139185, 21417555]

約数ペア:

[(1, 21417555), (3, 7139185), (5, 4283511), (15, 1427837), (67, 319665), (101, 212055), (201, 106555), (211, 101505), (303, 70685), (335, 63933), (505, 42411), (633, 33835), (1005, 21311), (1055, 20301), (1515, 14137), (3165, 6767)]