21833565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 18808995

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 71, 83, 95, 195, 213, 247, 249, 285, 355, 415, 741, 923, 1065, 1079, 1235, 1245, 1349, 1577, 2769, 3237, 3705, 4047, 4615, 4731, 5395, 5893, 6745, 7885, 13845, 16185, 17537, 17679, 20235, 20501, 23655, 29465, 52611, 61503, 76609, 87685, 88395, 102505, 111967, 229827, 263055, 307515, 335901, 383045, 559835, 1149135, 1455571, 1679505, 4366713, 7277855, 21833565]

約数ペア:

[(1, 21833565), (3, 7277855), (5, 4366713), (13, 1679505), (15, 1455571), (19, 1149135), (39, 559835), (57, 383045), (65, 335901), (71, 307515), (83, 263055), (95, 229827), (195, 111967), (213, 102505), (247, 88395), (249, 87685), (285, 76609), (355, 61503), (415, 52611), (741, 29465), (923, 23655), (1065, 20501), (1079, 20235), (1235, 17679), (1245, 17537), (1349, 16185), (1577, 13845), (2769, 7885), (3237, 6745), (3705, 5893), (4047, 5395), (4615, 4731)]