18041960

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1987}}^1$

素因数の和:2225

約数の個数: 32

約数和(自身を含む): 40793760

約数和(自身を除く): 22751800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 1987, 2270, 3974, 4540, 7948, 9080, 9935, 15896, 19870, 39740, 79480, 451049, 902098, 1804196, 2255245, 3608392, 4510490, 9020980, 18041960]

約数ペア:

[(1, 18041960), (2, 9020980), (4, 4510490), (5, 3608392), (8, 2255245), (10, 1804196), (20, 902098), (40, 451049), (227, 79480), (454, 39740), (908, 19870), (1135, 15896), (1816, 9935), (1987, 9080), (2270, 7948), (3974, 4540)]