81267940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16451}}^1$

素因数の和:16492

約数の個数: 48

約数和(自身を含む): 193475520

約数和(自身を除く): 112207580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 16451, 32902, 65804, 82255, 164510, 213863, 312569, 329020, 427726, 625138, 855452, 1069315, 1250276, 1562845, 2138630, 3125690, 4063397, 4277260, 6251380, 8126794, 16253588, 20316985, 40633970, 81267940]

約数ペア:

[(1, 81267940), (2, 40633970), (4, 20316985), (5, 16253588), (10, 8126794), (13, 6251380), (19, 4277260), (20, 4063397), (26, 3125690), (38, 2138630), (52, 1562845), (65, 1250276), (76, 1069315), (95, 855452), (130, 625138), (190, 427726), (247, 329020), (260, 312569), (380, 213863), (494, 164510), (988, 82255), (1235, 65804), (2470, 32902), (4940, 16451)]