20901088

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1069}}^1$

素因数の和:1139

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 24398432

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 94, 104, 188, 208, 376, 416, 611, 752, 1069, 1222, 1504, 2138, 2444, 4276, 4888, 8552, 9776, 13897, 17104, 19552, 27794, 34208, 50243, 55588, 100486, 111176, 200972, 222352, 401944, 444704, 653159, 803888, 1306318, 1607776, 2612636, 5225272, 10450544, 20901088]

約数ペア:

[(1, 20901088), (2, 10450544), (4, 5225272), (8, 2612636), (13, 1607776), (16, 1306318), (26, 803888), (32, 653159), (47, 444704), (52, 401944), (94, 222352), (104, 200972), (188, 111176), (208, 100486), (376, 55588), (416, 50243), (611, 34208), (752, 27794), (1069, 19552), (1222, 17104), (1504, 13897), (2138, 9776), (2444, 8552), (4276, 4888)]