21345240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25411}}^1$

素因数の和:25432

約数の個数: 64

約数和(自身を含む): 73186560

約数和(自身を除く): 51841320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25411, 50822, 76233, 101644, 127055, 152466, 177877, 203288, 254110, 304932, 355754, 381165, 508220, 533631, 609864, 711508, 762330, 889385, 1016440, 1067262, 1423016, 1524660, 1778770, 2134524, 2668155, 3049320, 3557540, 4269048, 5336310, 7115080, 10672620, 21345240]

約数ペア:

[(1, 21345240), (2, 10672620), (3, 7115080), (4, 5336310), (5, 4269048), (6, 3557540), (7, 3049320), (8, 2668155), (10, 2134524), (12, 1778770), (14, 1524660), (15, 1423016), (20, 1067262), (21, 1016440), (24, 889385), (28, 762330), (30, 711508), (35, 609864), (40, 533631), (42, 508220), (56, 381165), (60, 355754), (70, 304932), (84, 254110), (105, 203288), (120, 177877), (140, 152466), (168, 127055), (210, 101644), (280, 76233), (420, 50822), (840, 25411)]