18656103640

素因数分解:

$2^3\times 5^1\times {\mathrm{1877}}^1\times {\mathrm{248483}}^1$

素因数の和:250371

約数の個数: 32

約数和(自身を含む): 41998765680

約数和(自身を除く): 23342662040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1877, 3754, 7508, 9385, 15016, 18770, 37540, 75080, 248483, 496966, 993932, 1242415, 1987864, 2484830, 4969660, 9939320, 466402591, 932805182, 1865610364, 2332012955, 3731220728, 4664025910, 9328051820, 18656103640]

約数ペア:

[(1, 18656103640), (2, 9328051820), (4, 4664025910), (5, 3731220728), (8, 2332012955), (10, 1865610364), (20, 932805182), (40, 466402591), (1877, 9939320), (3754, 4969660), (7508, 2484830), (9385, 1987864), (15016, 1242415), (18770, 993932), (37540, 496966), (75080, 248483)]