668812040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1286177}}^1$

素因数の和:1286201

約数の個数: 32

約数和(自身を含む): 1620584280

約数和(自身を除く): 951772240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1286177, 2572354, 5144708, 6430885, 10289416, 12861770, 16720301, 25723540, 33440602, 51447080, 66881204, 83601505, 133762408, 167203010, 334406020, 668812040]

約数ペア:

[(1, 668812040), (2, 334406020), (4, 167203010), (5, 133762408), (8, 83601505), (10, 66881204), (13, 51447080), (20, 33440602), (26, 25723540), (40, 16720301), (52, 12861770), (65, 10289416), (104, 6430885), (130, 5144708), (260, 2572354), (520, 1286177)]