20183900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 48746880

約数和(自身を除く): 28562980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 59, 100, 110, 118, 220, 236, 275, 295, 311, 550, 590, 622, 649, 1100, 1180, 1244, 1298, 1475, 1555, 2596, 2950, 3110, 3245, 3421, 5900, 6220, 6490, 6842, 7775, 12980, 13684, 15550, 16225, 17105, 18349, 31100, 32450, 34210, 36698, 64900, 68420, 73396, 85525, 91745, 171050, 183490, 201839, 342100, 366980, 403678, 458725, 807356, 917450, 1009195, 1834900, 2018390, 4036780, 5045975, 10091950, 20183900]

約数ペア:

[(1, 20183900), (2, 10091950), (4, 5045975), (5, 4036780), (10, 2018390), (11, 1834900), (20, 1009195), (22, 917450), (25, 807356), (44, 458725), (50, 403678), (55, 366980), (59, 342100), (100, 201839), (110, 183490), (118, 171050), (220, 91745), (236, 85525), (275, 73396), (295, 68420), (311, 64900), (550, 36698), (590, 34210), (622, 32450), (649, 31100), (1100, 18349), (1180, 17105), (1244, 16225), (1298, 15550), (1475, 13684), (1555, 12980), (2596, 7775), (2950, 6842), (3110, 6490), (3245, 6220), (3421, 5900)]