28308980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{883}}^1$

素因数の和:1128

約数の個数: 48

約数和(自身を含む): 68315520

約数和(自身を除く): 40006540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 883, 916, 1145, 1603, 1766, 2290, 3206, 3532, 4415, 4580, 6181, 6412, 8015, 8830, 12362, 16030, 17660, 24724, 30905, 32060, 61810, 123620, 202207, 404414, 808828, 1011035, 1415449, 2022070, 2830898, 4044140, 5661796, 7077245, 14154490, 28308980]

約数ペア:

[(1, 28308980), (2, 14154490), (4, 7077245), (5, 5661796), (7, 4044140), (10, 2830898), (14, 2022070), (20, 1415449), (28, 1011035), (35, 808828), (70, 404414), (140, 202207), (229, 123620), (458, 61810), (883, 32060), (916, 30905), (1145, 24724), (1603, 17660), (1766, 16030), (2290, 12362), (3206, 8830), (3532, 8015), (4415, 6412), (4580, 6181)]