18563728

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:655

約数の個数: 40

約数和(自身を含む): 38435040

約数和(自身を除く): 19871312

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 139, 272, 278, 491, 556, 982, 1112, 1964, 2224, 2363, 3928, 4726, 7856, 8347, 9452, 16694, 18904, 33388, 37808, 66776, 68249, 133552, 136498, 272996, 545992, 1091984, 1160233, 2320466, 4640932, 9281864, 18563728]

約数ペア:

[(1, 18563728), (2, 9281864), (4, 4640932), (8, 2320466), (16, 1160233), (17, 1091984), (34, 545992), (68, 272996), (136, 136498), (139, 133552), (272, 68249), (278, 66776), (491, 37808), (556, 33388), (982, 18904), (1112, 16694), (1964, 9452), (2224, 8347), (2363, 7856), (3928, 4726)]