28508260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1283}}^1$

素因数の和:1404

約数の個数: 48

約数和(自身を含む): 66007872

約数和(自身を除く): 37499612

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 1283, 2020, 2222, 2566, 4444, 5132, 5555, 6415, 11110, 12830, 14113, 22220, 25660, 28226, 56452, 70565, 129583, 141130, 259166, 282260, 518332, 647915, 1295830, 1425413, 2591660, 2850826, 5701652, 7127065, 14254130, 28508260]

約数ペア:

[(1, 28508260), (2, 14254130), (4, 7127065), (5, 5701652), (10, 2850826), (11, 2591660), (20, 1425413), (22, 1295830), (44, 647915), (55, 518332), (101, 282260), (110, 259166), (202, 141130), (220, 129583), (404, 70565), (505, 56452), (1010, 28226), (1111, 25660), (1283, 22220), (2020, 14113), (2222, 12830), (2566, 11110), (4444, 6415), (5132, 5555)]