20281352

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2143}}^1$

素因数の和:2182

約数の個数: 48

約数和(自身を含む): 47082240

約数和(自身を除く): 26800888

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 2143, 2366, 4286, 4732, 8572, 9464, 15001, 17144, 27859, 30002, 55718, 60004, 111436, 120008, 195013, 222872, 362167, 390026, 724334, 780052, 1448668, 1560104, 2535169, 2897336, 5070338, 10140676, 20281352]

約数ペア:

[(1, 20281352), (2, 10140676), (4, 5070338), (7, 2897336), (8, 2535169), (13, 1560104), (14, 1448668), (26, 780052), (28, 724334), (52, 390026), (56, 362167), (91, 222872), (104, 195013), (169, 120008), (182, 111436), (338, 60004), (364, 55718), (676, 30002), (728, 27859), (1183, 17144), (1352, 15001), (2143, 9464), (2366, 8572), (4286, 4732)]