21701218

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 42402528

約数和(自身を除く): 20701310

約数列:

[1, 2, 7, 11, 14, 22, 41, 49, 77, 82, 98, 154, 287, 451, 491, 539, 574, 902, 982, 1078, 2009, 3157, 3437, 4018, 5401, 6314, 6874, 10802, 20131, 22099, 24059, 37807, 40262, 44198, 48118, 75614, 140917, 221441, 264649, 281834, 442882, 529298, 986419, 1550087, 1972838, 3100174, 10850609, 21701218]

約数ペア:

[(1, 21701218), (2, 10850609), (7, 3100174), (11, 1972838), (14, 1550087), (22, 986419), (41, 529298), (49, 442882), (77, 281834), (82, 264649), (98, 221441), (154, 140917), (287, 75614), (451, 48118), (491, 44198), (539, 40262), (574, 37807), (902, 24059), (982, 22099), (1078, 20131), (2009, 10802), (3157, 6874), (3437, 6314), (4018, 5401)]