20126840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{167}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27773320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 131, 167, 184, 230, 262, 334, 460, 524, 655, 668, 835, 920, 1048, 1310, 1336, 1670, 2620, 3013, 3340, 3841, 5240, 6026, 6680, 7682, 12052, 15065, 15364, 19205, 21877, 24104, 30130, 30728, 38410, 43754, 60260, 76820, 87508, 109385, 120520, 153640, 175016, 218770, 437540, 503171, 875080, 1006342, 2012684, 2515855, 4025368, 5031710, 10063420, 20126840]

約数ペア:

[(1, 20126840), (2, 10063420), (4, 5031710), (5, 4025368), (8, 2515855), (10, 2012684), (20, 1006342), (23, 875080), (40, 503171), (46, 437540), (92, 218770), (115, 175016), (131, 153640), (167, 120520), (184, 109385), (230, 87508), (262, 76820), (334, 60260), (460, 43754), (524, 38410), (655, 30728), (668, 30130), (835, 24104), (920, 21877), (1048, 19205), (1310, 15364), (1336, 15065), (1670, 12052), (2620, 7682), (3013, 6680), (3340, 6026), (3841, 5240)]