19857200

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4513}}^1$

素因数の和:4542

約数の個数: 60

約数和(自身を含む): 52055448

約数和(自身を除く): 32198248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4513, 9026, 18052, 22565, 36104, 45130, 49643, 72208, 90260, 99286, 112825, 180520, 198572, 225650, 248215, 361040, 397144, 451300, 496430, 794288, 902600, 992860, 1241075, 1805200, 1985720, 2482150, 3971440, 4964300, 9928600, 19857200]

約数ペア:

[(1, 19857200), (2, 9928600), (4, 4964300), (5, 3971440), (8, 2482150), (10, 1985720), (11, 1805200), (16, 1241075), (20, 992860), (22, 902600), (25, 794288), (40, 496430), (44, 451300), (50, 397144), (55, 361040), (80, 248215), (88, 225650), (100, 198572), (110, 180520), (176, 112825), (200, 99286), (220, 90260), (275, 72208), (400, 49643), (440, 45130), (550, 36104), (880, 22565), (1100, 18052), (2200, 9026), (4400, 4513)]