261402830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 520224768

約数和(自身を除く): 258821938

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 127, 130, 142, 223, 254, 355, 446, 635, 710, 923, 1115, 1270, 1651, 1846, 2230, 2899, 3302, 4615, 5798, 8255, 9017, 9230, 14495, 15833, 16510, 18034, 28321, 28990, 31666, 45085, 56642, 79165, 90170, 117221, 141605, 158330, 205829, 234442, 283210, 368173, 411658, 586105, 736346, 1029145, 1172210, 1840865, 2010791, 2058290, 3681730, 4021582, 10053955, 20107910, 26140283, 52280566, 130701415, 261402830]

約数ペア:

[(1, 261402830), (2, 130701415), (5, 52280566), (10, 26140283), (13, 20107910), (26, 10053955), (65, 4021582), (71, 3681730), (127, 2058290), (130, 2010791), (142, 1840865), (223, 1172210), (254, 1029145), (355, 736346), (446, 586105), (635, 411658), (710, 368173), (923, 283210), (1115, 234442), (1270, 205829), (1651, 158330), (1846, 141605), (2230, 117221), (2899, 90170), (3302, 79165), (4615, 56642), (5798, 45085), (8255, 31666), (9017, 28990), (9230, 28321), (14495, 18034), (15833, 16510)]