21428328

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 56088000

約数和(自身を除く): 34659672

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 59, 74, 111, 118, 148, 177, 222, 236, 296, 354, 409, 444, 472, 708, 818, 888, 1227, 1416, 1636, 2183, 2454, 3272, 4366, 4908, 6549, 8732, 9816, 13098, 15133, 17464, 24131, 26196, 30266, 45399, 48262, 52392, 60532, 72393, 90798, 96524, 121064, 144786, 181596, 193048, 289572, 363192, 579144, 892847, 1785694, 2678541, 3571388, 5357082, 7142776, 10714164, 21428328]

約数ペア:

[(1, 21428328), (2, 10714164), (3, 7142776), (4, 5357082), (6, 3571388), (8, 2678541), (12, 1785694), (24, 892847), (37, 579144), (59, 363192), (74, 289572), (111, 193048), (118, 181596), (148, 144786), (177, 121064), (222, 96524), (236, 90798), (296, 72393), (354, 60532), (409, 52392), (444, 48262), (472, 45399), (708, 30266), (818, 26196), (888, 24131), (1227, 17464), (1416, 15133), (1636, 13098), (2183, 9816), (2454, 8732), (3272, 6549), (4366, 4908)]