89080990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{991}}^1$

素因数の和:1188

約数の個数: 32

約数和(自身を含む): 163918080

約数和(自身を除く): 74837090

約数列:

[1, 2, 5, 10, 89, 101, 178, 202, 445, 505, 890, 991, 1010, 1982, 4955, 8989, 9910, 17978, 44945, 88199, 89890, 100091, 176398, 200182, 440995, 500455, 881990, 1000910, 8908099, 17816198, 44540495, 89080990]

約数ペア:

[(1, 89080990), (2, 44540495), (5, 17816198), (10, 8908099), (89, 1000910), (101, 881990), (178, 500455), (202, 440995), (445, 200182), (505, 176398), (890, 100091), (991, 89890), (1010, 88199), (1982, 44945), (4955, 17978), (8989, 9910)]