212821000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{30403}}^1$

素因数の和:30431

約数の個数: 64

約数和(自身を含む): 569162880

約数和(自身を除く): 356341880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 125, 140, 175, 200, 250, 280, 350, 500, 700, 875, 1000, 1400, 1750, 3500, 7000, 30403, 60806, 121612, 152015, 212821, 243224, 304030, 425642, 608060, 760075, 851284, 1064105, 1216120, 1520150, 1702568, 2128210, 3040300, 3800375, 4256420, 5320525, 6080600, 7600750, 8512840, 10641050, 15201500, 21282100, 26602625, 30403000, 42564200, 53205250, 106410500, 212821000]

約数ペア:

[(1, 212821000), (2, 106410500), (4, 53205250), (5, 42564200), (7, 30403000), (8, 26602625), (10, 21282100), (14, 15201500), (20, 10641050), (25, 8512840), (28, 7600750), (35, 6080600), (40, 5320525), (50, 4256420), (56, 3800375), (70, 3040300), (100, 2128210), (125, 1702568), (140, 1520150), (175, 1216120), (200, 1064105), (250, 851284), (280, 760075), (350, 608060), (500, 425642), (700, 304030), (875, 243224), (1000, 212821), (1400, 152015), (1750, 121612), (3500, 60806), (7000, 30403)]