19990300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1069}}^1$

素因数の和:1111

約数の個数: 72

約数和(自身を含む): 50153040

約数和(自身を除く): 30162740

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 100, 110, 170, 187, 220, 275, 340, 374, 425, 550, 748, 850, 935, 1069, 1100, 1700, 1870, 2138, 3740, 4276, 4675, 5345, 9350, 10690, 11759, 18173, 18700, 21380, 23518, 26725, 36346, 47036, 53450, 58795, 72692, 90865, 106900, 117590, 181730, 199903, 235180, 293975, 363460, 399806, 454325, 587950, 799612, 908650, 999515, 1175900, 1817300, 1999030, 3998060, 4997575, 9995150, 19990300]

約数ペア:

[(1, 19990300), (2, 9995150), (4, 4997575), (5, 3998060), (10, 1999030), (11, 1817300), (17, 1175900), (20, 999515), (22, 908650), (25, 799612), (34, 587950), (44, 454325), (50, 399806), (55, 363460), (68, 293975), (85, 235180), (100, 199903), (110, 181730), (170, 117590), (187, 106900), (220, 90865), (275, 72692), (340, 58795), (374, 53450), (425, 47036), (550, 36346), (748, 26725), (850, 23518), (935, 21380), (1069, 18700), (1100, 18173), (1700, 11759), (1870, 10690), (2138, 9350), (3740, 5345), (4276, 4675)]