28816580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{809}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 65726640

約数和(自身を除く): 36910060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 685, 809, 1370, 1618, 1781, 2740, 3236, 3562, 4045, 7124, 8090, 8905, 10517, 16180, 17810, 21034, 35620, 42068, 52585, 105170, 110833, 210340, 221666, 443332, 554165, 1108330, 1440829, 2216660, 2881658, 5763316, 7204145, 14408290, 28816580]

約数ペア:

[(1, 28816580), (2, 14408290), (4, 7204145), (5, 5763316), (10, 2881658), (13, 2216660), (20, 1440829), (26, 1108330), (52, 554165), (65, 443332), (130, 221666), (137, 210340), (260, 110833), (274, 105170), (548, 52585), (685, 42068), (809, 35620), (1370, 21034), (1618, 17810), (1781, 16180), (2740, 10517), (3236, 8905), (3562, 8090), (4045, 7124)]