166478780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{640303}}^1$

素因数の和:640325

約数の個数: 24

約数和(自身を含む): 376498752

約数和(自身を除く): 210019972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 640303, 1280606, 2561212, 3201515, 6403030, 8323939, 12806060, 16647878, 33295756, 41619695, 83239390, 166478780]

約数ペア:

[(1, 166478780), (2, 83239390), (4, 41619695), (5, 33295756), (10, 16647878), (13, 12806060), (20, 8323939), (26, 6403030), (52, 3201515), (65, 2561212), (130, 1280606), (260, 640303)]