21519537

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 11139663

約数列:

[1, 3, 13, 29, 39, 53, 87, 159, 359, 377, 689, 1077, 1131, 1537, 2067, 4611, 4667, 10411, 14001, 19027, 19981, 31233, 57081, 59943, 135343, 247351, 406029, 551783, 742053, 1655349, 7173179, 21519537]

約数ペア:

[(1, 21519537), (3, 7173179), (13, 1655349), (29, 742053), (39, 551783), (53, 406029), (87, 247351), (159, 135343), (359, 59943), (377, 57081), (689, 31233), (1077, 19981), (1131, 19027), (1537, 14001), (2067, 10411), (4611, 4667)]