21152986

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{787}}^1$

素因数の和:1029

約数の個数: 16

約数和(自身を含む): 32339520

約数和(自身を除く): 11186534

約数列:

[1, 2, 89, 151, 178, 302, 787, 1574, 13439, 26878, 70043, 118837, 140086, 237674, 10576493, 21152986]

約数ペア:

[(1, 21152986), (2, 10576493), (89, 237674), (151, 140086), (178, 118837), (302, 70043), (787, 26878), (1574, 13439)]