20043880

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6343}}^1$

素因数の和:6433

約数の個数: 32

約数和(自身を含む): 45676800

約数和(自身を除く): 25632920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6343, 12686, 25372, 31715, 50744, 63430, 126860, 253720, 501097, 1002194, 2004388, 2505485, 4008776, 5010970, 10021940, 20043880]

約数ペア:

[(1, 20043880), (2, 10021940), (4, 5010970), (5, 4008776), (8, 2505485), (10, 2004388), (20, 1002194), (40, 501097), (79, 253720), (158, 126860), (316, 63430), (395, 50744), (632, 31715), (790, 25372), (1580, 12686), (3160, 6343)]