18938800

素因数分解:

$2^4\times 5^2\times {\mathrm{113}}^1\times {\mathrm{419}}^1$

素因数の和:550

約数の個数: 60

約数和(自身を含む): 46012680

約数和(自身を除く): 27073880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 113, 200, 226, 400, 419, 452, 565, 838, 904, 1130, 1676, 1808, 2095, 2260, 2825, 3352, 4190, 4520, 5650, 6704, 8380, 9040, 10475, 11300, 16760, 20950, 22600, 33520, 41900, 45200, 47347, 83800, 94694, 167600, 189388, 236735, 378776, 473470, 757552, 946940, 1183675, 1893880, 2367350, 3787760, 4734700, 9469400, 18938800]

約数ペア:

[(1, 18938800), (2, 9469400), (4, 4734700), (5, 3787760), (8, 2367350), (10, 1893880), (16, 1183675), (20, 946940), (25, 757552), (40, 473470), (50, 378776), (80, 236735), (100, 189388), (113, 167600), (200, 94694), (226, 83800), (400, 47347), (419, 45200), (452, 41900), (565, 33520), (838, 22600), (904, 20950), (1130, 16760), (1676, 11300), (1808, 10475), (2095, 9040), (2260, 8380), (2825, 6704), (3352, 5650), (4190, 4520)]