21389056

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{6427}}^1$

素因数の和:6456

約数の個数: 36

約数和(自身を含む): 45985912

約数和(自身を除く): 24596856

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 6427, 12854, 25708, 51416, 83551, 102832, 167102, 205664, 334204, 411328, 668408, 822656, 1336816, 1645312, 2673632, 5347264, 10694528, 21389056]

約数ペア:

[(1, 21389056), (2, 10694528), (4, 5347264), (8, 2673632), (13, 1645312), (16, 1336816), (26, 822656), (32, 668408), (52, 411328), (64, 334204), (104, 205664), (128, 167102), (208, 102832), (256, 83551), (416, 51416), (832, 25708), (1664, 12854), (3328, 6427)]