20345708

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 39325440

約数和(自身を除く): 18979732

約数列:

[1, 2, 4, 23, 37, 43, 46, 74, 86, 92, 139, 148, 172, 278, 556, 851, 989, 1591, 1702, 1978, 3182, 3197, 3404, 3956, 5143, 5977, 6364, 6394, 10286, 11954, 12788, 20572, 23908, 36593, 73186, 118289, 137471, 146372, 221149, 236578, 274942, 442298, 473156, 549884, 884596, 5086427, 10172854, 20345708]

約数ペア:

[(1, 20345708), (2, 10172854), (4, 5086427), (23, 884596), (37, 549884), (43, 473156), (46, 442298), (74, 274942), (86, 236578), (92, 221149), (139, 146372), (148, 137471), (172, 118289), (278, 73186), (556, 36593), (851, 23908), (989, 20572), (1591, 12788), (1702, 11954), (1978, 10286), (3182, 6394), (3197, 6364), (3404, 5977), (3956, 5143)]