320423728

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{328303}}^1$

素因数の和:328372

約数の個数: 20

約数和(自身を含む): 631000288

約数和(自身を除く): 310576560

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 328303, 656606, 1313212, 2626424, 5252848, 20026483, 40052966, 80105932, 160211864, 320423728]

約数ペア:

[(1, 320423728), (2, 160211864), (4, 80105932), (8, 40052966), (16, 20026483), (61, 5252848), (122, 2626424), (244, 1313212), (488, 656606), (976, 328303)]