18055580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{227}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 39414816

約数和(自身を除く): 21359236

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 227, 388, 410, 454, 485, 820, 908, 970, 1135, 1940, 2270, 3977, 4540, 7954, 9307, 15908, 18614, 19885, 22019, 37228, 39770, 44038, 46535, 79540, 88076, 93070, 110095, 186140, 220190, 440380, 902779, 1805558, 3611116, 4513895, 9027790, 18055580]

約数ペア:

[(1, 18055580), (2, 9027790), (4, 4513895), (5, 3611116), (10, 1805558), (20, 902779), (41, 440380), (82, 220190), (97, 186140), (164, 110095), (194, 93070), (205, 88076), (227, 79540), (388, 46535), (410, 44038), (454, 39770), (485, 37228), (820, 22019), (908, 19885), (970, 18614), (1135, 15908), (1940, 9307), (2270, 7954), (3977, 4540)]