21408496

素因数分解:

$2^4\times {\mathrm{29}}^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:146

約数の個数: 60

約数和(自身を含む): 45145672

約数和(自身を除く): 23737176

約数列:

[1, 2, 4, 8, 16, 29, 37, 43, 58, 74, 86, 116, 148, 172, 232, 296, 344, 464, 592, 688, 841, 1073, 1247, 1591, 1682, 2146, 2494, 3182, 3364, 4292, 4988, 6364, 6728, 8584, 9976, 12728, 13456, 17168, 19952, 25456, 31117, 36163, 46139, 62234, 72326, 92278, 124468, 144652, 184556, 248936, 289304, 369112, 497872, 578608, 738224, 1338031, 2676062, 5352124, 10704248, 21408496]

約数ペア:

[(1, 21408496), (2, 10704248), (4, 5352124), (8, 2676062), (16, 1338031), (29, 738224), (37, 578608), (43, 497872), (58, 369112), (74, 289304), (86, 248936), (116, 184556), (148, 144652), (172, 124468), (232, 92278), (296, 72326), (344, 62234), (464, 46139), (592, 36163), (688, 31117), (841, 25456), (1073, 19952), (1247, 17168), (1591, 13456), (1682, 12728), (2146, 9976), (2494, 8584), (3182, 6728), (3364, 6364), (4292, 4988)]