21507500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{1229}}^1$

素因数の和:1260

約数の個数: 60

約数和(自身を含む): 53795280

約数和(自身を除く): 32287780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 625, 700, 875, 1229, 1250, 1750, 2458, 2500, 3500, 4375, 4916, 6145, 8603, 8750, 12290, 17206, 17500, 24580, 30725, 34412, 43015, 61450, 86030, 122900, 153625, 172060, 215075, 307250, 430150, 614500, 768125, 860300, 1075375, 1536250, 2150750, 3072500, 4301500, 5376875, 10753750, 21507500]

約数ペア:

[(1, 21507500), (2, 10753750), (4, 5376875), (5, 4301500), (7, 3072500), (10, 2150750), (14, 1536250), (20, 1075375), (25, 860300), (28, 768125), (35, 614500), (50, 430150), (70, 307250), (100, 215075), (125, 172060), (140, 153625), (175, 122900), (250, 86030), (350, 61450), (500, 43015), (625, 34412), (700, 30725), (875, 24580), (1229, 17500), (1250, 17206), (1750, 12290), (2458, 8750), (2500, 8603), (3500, 6145), (4375, 4916)]