388889000

素因数分解:

$2^3\times 5^3\times {\mathrm{157}}^1\times {\mathrm{2477}}^1$

素因数の和:2655

約数の個数: 64

約数和(自身を含む): 916166160

約数和(自身を除く): 527277160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 157, 200, 250, 314, 500, 628, 785, 1000, 1256, 1570, 2477, 3140, 3925, 4954, 6280, 7850, 9908, 12385, 15700, 19625, 19816, 24770, 31400, 39250, 49540, 61925, 78500, 99080, 123850, 157000, 247700, 309625, 388889, 495400, 619250, 777778, 1238500, 1555556, 1944445, 2477000, 3111112, 3888890, 7777780, 9722225, 15555560, 19444450, 38888900, 48611125, 77777800, 97222250, 194444500, 388889000]

約数ペア:

[(1, 388889000), (2, 194444500), (4, 97222250), (5, 77777800), (8, 48611125), (10, 38888900), (20, 19444450), (25, 15555560), (40, 9722225), (50, 7777780), (100, 3888890), (125, 3111112), (157, 2477000), (200, 1944445), (250, 1555556), (314, 1238500), (500, 777778), (628, 619250), (785, 495400), (1000, 388889), (1256, 309625), (1570, 247700), (2477, 157000), (3140, 123850), (3925, 99080), (4954, 78500), (6280, 61925), (7850, 49540), (9908, 39250), (12385, 31400), (15700, 24770), (19625, 19816)]