639072332

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{787}}^1\times {\mathrm{2281}}^1$

素因数の和:3161

約数の個数: 24

約数和(自身を含む): 1132876080

約数和(自身を除く): 493803748

約数列:

[1, 2, 4, 89, 178, 356, 787, 1574, 2281, 3148, 4562, 9124, 70043, 140086, 203009, 280172, 406018, 812036, 1795147, 3590294, 7180588, 159768083, 319536166, 639072332]

約数ペア:

[(1, 639072332), (2, 319536166), (4, 159768083), (89, 7180588), (178, 3590294), (356, 1795147), (787, 812036), (1574, 406018), (2281, 280172), (3148, 203009), (4562, 140086), (9124, 70043)]