21091798

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{401}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 41467104

約数和(自身を除く): 20375306

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 91, 119, 182, 221, 238, 289, 401, 442, 578, 802, 1547, 2023, 2807, 3094, 3757, 4046, 5213, 5614, 6817, 7514, 10426, 13634, 26299, 36491, 47719, 52598, 72982, 88621, 95438, 115889, 177242, 231778, 620347, 811223, 1240694, 1506557, 1622446, 3013114, 10545899, 21091798]

約数ペア:

[(1, 21091798), (2, 10545899), (7, 3013114), (13, 1622446), (14, 1506557), (17, 1240694), (26, 811223), (34, 620347), (91, 231778), (119, 177242), (182, 115889), (221, 95438), (238, 88621), (289, 72982), (401, 52598), (442, 47719), (578, 36491), (802, 26299), (1547, 13634), (2023, 10426), (2807, 7514), (3094, 6817), (3757, 5614), (4046, 5213)]