20721712

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5119}}^1$

素因数の和:5161

約数の個数: 40

約数和(自身を含む): 45711360

約数和(自身を除く): 24989648

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 44, 46, 88, 92, 176, 184, 253, 368, 506, 1012, 2024, 4048, 5119, 10238, 20476, 40952, 56309, 81904, 112618, 117737, 225236, 235474, 450472, 470948, 900944, 941896, 1295107, 1883792, 2590214, 5180428, 10360856, 20721712]

約数ペア:

[(1, 20721712), (2, 10360856), (4, 5180428), (8, 2590214), (11, 1883792), (16, 1295107), (22, 941896), (23, 900944), (44, 470948), (46, 450472), (88, 235474), (92, 225236), (176, 117737), (184, 112618), (253, 81904), (368, 56309), (506, 40952), (1012, 20476), (2024, 10238), (4048, 5119)]