21430448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{523}}^1$

素因数の和:741

約数の個数: 40

約数和(自身を含む): 45028368

約数和(自身を除く): 23597920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 197, 208, 394, 523, 788, 1046, 1576, 2092, 2561, 3152, 4184, 5122, 6799, 8368, 10244, 13598, 20488, 27196, 40976, 54392, 103031, 108784, 206062, 412124, 824248, 1339403, 1648496, 2678806, 5357612, 10715224, 21430448]

約数ペア:

[(1, 21430448), (2, 10715224), (4, 5357612), (8, 2678806), (13, 1648496), (16, 1339403), (26, 824248), (52, 412124), (104, 206062), (197, 108784), (208, 103031), (394, 54392), (523, 40976), (788, 27196), (1046, 20488), (1576, 13598), (2092, 10244), (2561, 8368), (3152, 6799), (4184, 5122)]