21530800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2833}}^1$

素因数の和:2870

約数の個数: 60

約数和(自身を含む): 54469480

約数和(自身を除く): 32938680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2833, 3800, 5666, 7600, 11332, 14165, 22664, 28330, 45328, 53827, 56660, 70825, 107654, 113320, 141650, 215308, 226640, 269135, 283300, 430616, 538270, 566600, 861232, 1076540, 1133200, 1345675, 2153080, 2691350, 4306160, 5382700, 10765400, 21530800]

約数ペア:

[(1, 21530800), (2, 10765400), (4, 5382700), (5, 4306160), (8, 2691350), (10, 2153080), (16, 1345675), (19, 1133200), (20, 1076540), (25, 861232), (38, 566600), (40, 538270), (50, 430616), (76, 283300), (80, 269135), (95, 226640), (100, 215308), (152, 141650), (190, 113320), (200, 107654), (304, 70825), (380, 56660), (400, 53827), (475, 45328), (760, 28330), (950, 22664), (1520, 14165), (1900, 11332), (2833, 7600), (3800, 5666)]