221257790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{39581}}^1$

素因数の和:39644

約数の個数: 32

約数和(自身を含む): 438885216

約数和(自身を除く): 217627426

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 5590, 39581, 79162, 197905, 395810, 514553, 1029106, 1701983, 2572765, 3403966, 5145530, 8509915, 17019830, 22125779, 44251558, 110628895, 221257790]

約数ペア:

[(1, 221257790), (2, 110628895), (5, 44251558), (10, 22125779), (13, 17019830), (26, 8509915), (43, 5145530), (65, 3403966), (86, 2572765), (130, 1701983), (215, 1029106), (430, 514553), (559, 395810), (1118, 197905), (2795, 79162), (5590, 39581)]