21964520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{227}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 51710400

約数和(自身を除く): 29745880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 59, 82, 118, 164, 205, 227, 236, 295, 328, 410, 454, 472, 590, 820, 908, 1135, 1180, 1640, 1816, 2270, 2360, 2419, 4540, 4838, 9080, 9307, 9676, 12095, 13393, 18614, 19352, 24190, 26786, 37228, 46535, 48380, 53572, 66965, 74456, 93070, 96760, 107144, 133930, 186140, 267860, 372280, 535720, 549113, 1098226, 2196452, 2745565, 4392904, 5491130, 10982260, 21964520]

約数ペア:

[(1, 21964520), (2, 10982260), (4, 5491130), (5, 4392904), (8, 2745565), (10, 2196452), (20, 1098226), (40, 549113), (41, 535720), (59, 372280), (82, 267860), (118, 186140), (164, 133930), (205, 107144), (227, 96760), (236, 93070), (295, 74456), (328, 66965), (410, 53572), (454, 48380), (472, 46535), (590, 37228), (820, 26786), (908, 24190), (1135, 19352), (1180, 18614), (1640, 13393), (1816, 12095), (2270, 9676), (2360, 9307), (2419, 9080), (4540, 4838)]