397345840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{55807}}^1$

素因数の和:55909

約数の個数: 40

約数和(自身を含む): 934225920

約数和(自身を除く): 536880080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 55807, 111614, 223228, 279035, 446456, 558070, 892912, 1116140, 2232280, 4464560, 4966823, 9933646, 19867292, 24834115, 39734584, 49668230, 79469168, 99336460, 198672920, 397345840]

約数ペア:

[(1, 397345840), (2, 198672920), (4, 99336460), (5, 79469168), (8, 49668230), (10, 39734584), (16, 24834115), (20, 19867292), (40, 9933646), (80, 4966823), (89, 4464560), (178, 2232280), (356, 1116140), (445, 892912), (712, 558070), (890, 446456), (1424, 279035), (1780, 223228), (3560, 111614), (7120, 55807)]