21291450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{3301}}^1$

素因数の和:3359

約数の個数: 48

約数和(自身を含む): 54047136

約数和(自身を除く): 32755686

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 86, 129, 150, 215, 258, 430, 645, 1075, 1290, 2150, 3225, 3301, 6450, 6602, 9903, 16505, 19806, 33010, 49515, 82525, 99030, 141943, 165050, 247575, 283886, 425829, 495150, 709715, 851658, 1419430, 2129145, 3548575, 4258290, 7097150, 10645725, 21291450]

約数ペア:

[(1, 21291450), (2, 10645725), (3, 7097150), (5, 4258290), (6, 3548575), (10, 2129145), (15, 1419430), (25, 851658), (30, 709715), (43, 495150), (50, 425829), (75, 283886), (86, 247575), (129, 165050), (150, 141943), (215, 99030), (258, 82525), (430, 49515), (645, 33010), (1075, 19806), (1290, 16505), (2150, 9903), (3225, 6602), (3301, 6450)]