210656537

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 40

約数和(自身を含む): 280929096

約数和(自身を除く): 70272559

約数列:

[1, 7, 13, 17, 49, 91, 119, 221, 343, 397, 637, 833, 1547, 2401, 2779, 4459, 5161, 5831, 6749, 10829, 19453, 31213, 36127, 40817, 47243, 75803, 87737, 136171, 252889, 330701, 530621, 614159, 953197, 1770223, 2314907, 4299113, 12391561, 16204349, 30093791, 210656537]

約数ペア:

[(1, 210656537), (7, 30093791), (13, 16204349), (17, 12391561), (49, 4299113), (91, 2314907), (119, 1770223), (221, 953197), (343, 614159), (397, 530621), (637, 330701), (833, 252889), (1547, 136171), (2401, 87737), (2779, 75803), (4459, 47243), (5161, 40817), (5831, 36127), (6749, 31213), (10829, 19453)]