20453500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2153}}^1$

素因数の和:2191

約数の個数: 48

約数和(自身を含む): 47043360

約数和(自身を除く): 26589860

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2153, 2375, 4306, 4750, 8612, 9500, 10765, 21530, 40907, 43060, 53825, 81814, 107650, 163628, 204535, 215300, 269125, 409070, 538250, 818140, 1022675, 1076500, 2045350, 4090700, 5113375, 10226750, 20453500]

約数ペア:

[(1, 20453500), (2, 10226750), (4, 5113375), (5, 4090700), (10, 2045350), (19, 1076500), (20, 1022675), (25, 818140), (38, 538250), (50, 409070), (76, 269125), (95, 215300), (100, 204535), (125, 163628), (190, 107650), (250, 81814), (380, 53825), (475, 43060), (500, 40907), (950, 21530), (1900, 10765), (2153, 9500), (2375, 8612), (4306, 4750)]