161197240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{433}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 374038560

約数和(自身を除く): 212841320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 227, 328, 410, 433, 454, 820, 866, 908, 1135, 1640, 1732, 1816, 2165, 2270, 3464, 4330, 4540, 8660, 9080, 9307, 17320, 17753, 18614, 35506, 37228, 46535, 71012, 74456, 88765, 93070, 98291, 142024, 177530, 186140, 196582, 355060, 372280, 393164, 491455, 710120, 786328, 982910, 1965820, 3931640, 4029931, 8059862, 16119724, 20149655, 32239448, 40299310, 80598620, 161197240]

約数ペア:

[(1, 161197240), (2, 80598620), (4, 40299310), (5, 32239448), (8, 20149655), (10, 16119724), (20, 8059862), (40, 4029931), (41, 3931640), (82, 1965820), (164, 982910), (205, 786328), (227, 710120), (328, 491455), (410, 393164), (433, 372280), (454, 355060), (820, 196582), (866, 186140), (908, 177530), (1135, 142024), (1640, 98291), (1732, 93070), (1816, 88765), (2165, 74456), (2270, 71012), (3464, 46535), (4330, 37228), (4540, 35506), (8660, 18614), (9080, 17753), (9307, 17320)]