21109504

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{6343}}^1$

素因数の和:6372

約数の個数: 36

約数和(自身を含む): 45384976

約数和(自身を除く): 24275472

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 6343, 12686, 25372, 50744, 82459, 101488, 164918, 202976, 329836, 405952, 659672, 811904, 1319344, 1623808, 2638688, 5277376, 10554752, 21109504]

約数ペア:

[(1, 21109504), (2, 10554752), (4, 5277376), (8, 2638688), (13, 1623808), (16, 1319344), (26, 811904), (32, 659672), (52, 405952), (64, 329836), (104, 202976), (128, 164918), (208, 101488), (256, 82459), (416, 50744), (832, 25372), (1664, 12686), (3328, 6343)]