261584590

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{19391}}^1$

素因数の和:19488

約数の個数: 32

約数和(自身を含む): 502640640

約数和(自身を除く): 241056050

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 2698, 6745, 13490, 19391, 38782, 96955, 193910, 368429, 736858, 1376761, 1842145, 2753522, 3684290, 6883805, 13767610, 26158459, 52316918, 130792295, 261584590]

約数ペア:

[(1, 261584590), (2, 130792295), (5, 52316918), (10, 26158459), (19, 13767610), (38, 6883805), (71, 3684290), (95, 2753522), (142, 1842145), (190, 1376761), (355, 736858), (710, 368429), (1349, 193910), (2698, 96955), (6745, 38782), (13490, 19391)]