639721146

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{181019}}^1$

素因数の和:181074

約数の個数: 32

約数和(自身を含む): 1390233600

約数和(自身を除く): 750512454

約数列:

[1, 2, 3, 6, 19, 31, 38, 57, 62, 93, 114, 186, 589, 1178, 1767, 3534, 181019, 362038, 543057, 1086114, 3439361, 5611589, 6878722, 10318083, 11223178, 16834767, 20636166, 33669534, 106620191, 213240382, 319860573, 639721146]

約数ペア:

[(1, 639721146), (2, 319860573), (3, 213240382), (6, 106620191), (19, 33669534), (31, 20636166), (38, 16834767), (57, 11223178), (62, 10318083), (93, 6878722), (114, 5611589), (186, 3439361), (589, 1086114), (1178, 543057), (1767, 362038), (3534, 181019)]