18162280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 24738200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 124, 151, 155, 194, 248, 302, 310, 388, 485, 604, 620, 755, 776, 970, 1208, 1240, 1510, 1940, 3007, 3020, 3880, 4681, 6014, 6040, 9362, 12028, 14647, 15035, 18724, 23405, 24056, 29294, 30070, 37448, 46810, 58588, 60140, 73235, 93620, 117176, 120280, 146470, 187240, 292940, 454057, 585880, 908114, 1816228, 2270285, 3632456, 4540570, 9081140, 18162280]

約数ペア:

[(1, 18162280), (2, 9081140), (4, 4540570), (5, 3632456), (8, 2270285), (10, 1816228), (20, 908114), (31, 585880), (40, 454057), (62, 292940), (97, 187240), (124, 146470), (151, 120280), (155, 117176), (194, 93620), (248, 73235), (302, 60140), (310, 58588), (388, 46810), (485, 37448), (604, 30070), (620, 29294), (755, 24056), (776, 23405), (970, 18724), (1208, 15035), (1240, 14647), (1510, 12028), (1940, 9362), (3007, 6040), (3020, 6014), (3880, 4681)]