21016020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:289

約数の個数: 96

約数和(自身を含む): 62431488

約数和(自身を除く): 41415468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 97, 115, 138, 157, 194, 230, 276, 291, 314, 345, 388, 460, 471, 485, 582, 628, 690, 785, 942, 970, 1164, 1380, 1455, 1570, 1884, 1940, 2231, 2355, 2910, 3140, 3611, 4462, 4710, 5820, 6693, 7222, 8924, 9420, 10833, 11155, 13386, 14444, 15229, 18055, 21666, 22310, 26772, 30458, 33465, 36110, 43332, 44620, 45687, 54165, 60916, 66930, 72220, 76145, 91374, 108330, 133860, 152290, 182748, 216660, 228435, 304580, 350267, 456870, 700534, 913740, 1050801, 1401068, 1751335, 2101602, 3502670, 4203204, 5254005, 7005340, 10508010, 21016020]

約数ペア:

[(1, 21016020), (2, 10508010), (3, 7005340), (4, 5254005), (5, 4203204), (6, 3502670), (10, 2101602), (12, 1751335), (15, 1401068), (20, 1050801), (23, 913740), (30, 700534), (46, 456870), (60, 350267), (69, 304580), (92, 228435), (97, 216660), (115, 182748), (138, 152290), (157, 133860), (194, 108330), (230, 91374), (276, 76145), (291, 72220), (314, 66930), (345, 60916), (388, 54165), (460, 45687), (471, 44620), (485, 43332), (582, 36110), (628, 33465), (690, 30458), (785, 26772), (942, 22310), (970, 21666), (1164, 18055), (1380, 15229), (1455, 14444), (1570, 13386), (1884, 11155), (1940, 10833), (2231, 9420), (2355, 8924), (2910, 7222), (3140, 6693), (3611, 5820), (4462, 4710)]