18815500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{311}}^1$

素因数の和:352

約数の個数: 72

約数和(自身を含む): 45313632

約数和(自身を除く): 26498132

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 311, 484, 500, 550, 605, 622, 1100, 1210, 1244, 1375, 1555, 2420, 2750, 3025, 3110, 3421, 5500, 6050, 6220, 6842, 7775, 12100, 13684, 15125, 15550, 17105, 30250, 31100, 34210, 37631, 38875, 60500, 68420, 75262, 77750, 85525, 150524, 155500, 171050, 188155, 342100, 376310, 427625, 752620, 855250, 940775, 1710500, 1881550, 3763100, 4703875, 9407750, 18815500]

約数ペア:

[(1, 18815500), (2, 9407750), (4, 4703875), (5, 3763100), (10, 1881550), (11, 1710500), (20, 940775), (22, 855250), (25, 752620), (44, 427625), (50, 376310), (55, 342100), (100, 188155), (110, 171050), (121, 155500), (125, 150524), (220, 85525), (242, 77750), (250, 75262), (275, 68420), (311, 60500), (484, 38875), (500, 37631), (550, 34210), (605, 31100), (622, 30250), (1100, 17105), (1210, 15550), (1244, 15125), (1375, 13684), (1555, 12100), (2420, 7775), (2750, 6842), (3025, 6220), (3110, 6050), (3421, 5500)]