21448144

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{349}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 43747200

約数和(自身を除く): 22299056

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 167, 184, 334, 349, 368, 668, 698, 1336, 1396, 2672, 2792, 3841, 5584, 7682, 8027, 15364, 16054, 30728, 32108, 58283, 61456, 64216, 116566, 128432, 233132, 466264, 932528, 1340509, 2681018, 5362036, 10724072, 21448144]

約数ペア:

[(1, 21448144), (2, 10724072), (4, 5362036), (8, 2681018), (16, 1340509), (23, 932528), (46, 466264), (92, 233132), (167, 128432), (184, 116566), (334, 64216), (349, 61456), (368, 58283), (668, 32108), (698, 30728), (1336, 16054), (1396, 15364), (2672, 8027), (2792, 7682), (3841, 5584)]