18257385

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^2$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 32500800

約数和(自身を除く): 14243415

約数列:

[1, 3, 5, 15, 19, 29, 47, 57, 87, 95, 141, 145, 235, 285, 435, 551, 705, 893, 1363, 1653, 2209, 2679, 2755, 4089, 4465, 6627, 6815, 8265, 11045, 13395, 20445, 25897, 33135, 41971, 64061, 77691, 125913, 129485, 192183, 209855, 320305, 388455, 629565, 960915, 1217159, 3651477, 6085795, 18257385]

約数ペア:

[(1, 18257385), (3, 6085795), (5, 3651477), (15, 1217159), (19, 960915), (29, 629565), (47, 388455), (57, 320305), (87, 209855), (95, 192183), (141, 129485), (145, 125913), (235, 77691), (285, 64061), (435, 41971), (551, 33135), (705, 25897), (893, 20445), (1363, 13395), (1653, 11045), (2209, 8265), (2679, 6815), (2755, 6627), (4089, 4465)]