489800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 1190400

約数和(自身を除く): 700600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 79, 100, 124, 155, 158, 200, 248, 310, 316, 395, 620, 632, 775, 790, 1240, 1550, 1580, 1975, 2449, 3100, 3160, 3950, 4898, 6200, 7900, 9796, 12245, 15800, 19592, 24490, 48980, 61225, 97960, 122450, 244900, 489800]

約数ペア:

[(1, 489800), (2, 244900), (4, 122450), (5, 97960), (8, 61225), (10, 48980), (20, 24490), (25, 19592), (31, 15800), (40, 12245), (50, 9796), (62, 7900), (79, 6200), (100, 4898), (124, 3950), (155, 3160), (158, 3100), (200, 2449), (248, 1975), (310, 1580), (316, 1550), (395, 1240), (620, 790), (632, 775)]