21437456

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 42747264

約数和(自身を除く): 21309808

約数列:

[1, 2, 4, 8, 16, 71, 113, 142, 167, 226, 284, 334, 452, 568, 668, 904, 1136, 1336, 1808, 2672, 8023, 11857, 16046, 18871, 23714, 32092, 37742, 47428, 64184, 75484, 94856, 128368, 150968, 189712, 301936, 1339841, 2679682, 5359364, 10718728, 21437456]

約数ペア:

[(1, 21437456), (2, 10718728), (4, 5359364), (8, 2679682), (16, 1339841), (71, 301936), (113, 189712), (142, 150968), (167, 128368), (226, 94856), (284, 75484), (334, 64184), (452, 47428), (568, 37742), (668, 32092), (904, 23714), (1136, 18871), (1336, 16046), (1808, 11857), (2672, 8023)]