20723500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:248

約数の個数: 96

約数和(自身を含む): 53673984

約数和(自身を除く): 32950484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 125, 140, 155, 175, 191, 217, 250, 310, 350, 382, 434, 500, 620, 700, 764, 775, 868, 875, 955, 1085, 1337, 1550, 1750, 1910, 2170, 2674, 3100, 3500, 3820, 3875, 4340, 4775, 5348, 5425, 5921, 6685, 7750, 9550, 10850, 11842, 13370, 15500, 19100, 21700, 23684, 23875, 26740, 27125, 29605, 33425, 41447, 47750, 54250, 59210, 66850, 82894, 95500, 108500, 118420, 133700, 148025, 165788, 167125, 207235, 296050, 334250, 414470, 592100, 668500, 740125, 828940, 1036175, 1480250, 2072350, 2960500, 4144700, 5180875, 10361750, 20723500]

約数ペア:

[(1, 20723500), (2, 10361750), (4, 5180875), (5, 4144700), (7, 2960500), (10, 2072350), (14, 1480250), (20, 1036175), (25, 828940), (28, 740125), (31, 668500), (35, 592100), (50, 414470), (62, 334250), (70, 296050), (100, 207235), (124, 167125), (125, 165788), (140, 148025), (155, 133700), (175, 118420), (191, 108500), (217, 95500), (250, 82894), (310, 66850), (350, 59210), (382, 54250), (434, 47750), (500, 41447), (620, 33425), (700, 29605), (764, 27125), (775, 26740), (868, 23875), (875, 23684), (955, 21700), (1085, 19100), (1337, 15500), (1550, 13370), (1750, 11842), (1910, 10850), (2170, 9550), (2674, 7750), (3100, 6685), (3500, 5921), (3820, 5425), (3875, 5348), (4340, 4775)]