398440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1423}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 1025280

約数和(自身を除く): 626840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1423, 2846, 5692, 7115, 9961, 11384, 14230, 19922, 28460, 39844, 49805, 56920, 79688, 99610, 199220, 398440]

約数ペア:

[(1, 398440), (2, 199220), (4, 99610), (5, 79688), (7, 56920), (8, 49805), (10, 39844), (14, 28460), (20, 19922), (28, 14230), (35, 11384), (40, 9961), (56, 7115), (70, 5692), (140, 2846), (280, 1423)]