21591808

素因数分解:

$2^8\times 7^1\times {\mathrm{12049}}^1$

素因数の和:12072

約数の個数: 36

約数和(自身を含む): 49260400

約数和(自身を除く): 27668592

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 12049, 24098, 48196, 84343, 96392, 168686, 192784, 337372, 385568, 674744, 771136, 1349488, 1542272, 2698976, 3084544, 5397952, 10795904, 21591808]

約数ペア:

[(1, 21591808), (2, 10795904), (4, 5397952), (7, 3084544), (8, 2698976), (14, 1542272), (16, 1349488), (28, 771136), (32, 674744), (56, 385568), (64, 337372), (112, 192784), (128, 168686), (224, 96392), (256, 84343), (448, 48196), (896, 24098), (1792, 12049)]