20165481

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 35188608

約数和(自身を除く): 15023127

約数列:

[1, 3, 7, 9, 21, 37, 41, 63, 111, 123, 211, 259, 287, 333, 369, 633, 777, 861, 1477, 1517, 1899, 2331, 2583, 4431, 4551, 7807, 8651, 10619, 13293, 13653, 23421, 25953, 31857, 54649, 60557, 70263, 77859, 95571, 163947, 181671, 320087, 491841, 545013, 960261, 2240609, 2880783, 6721827, 20165481]

約数ペア:

[(1, 20165481), (3, 6721827), (7, 2880783), (9, 2240609), (21, 960261), (37, 545013), (41, 491841), (63, 320087), (111, 181671), (123, 163947), (211, 95571), (259, 77859), (287, 70263), (333, 60557), (369, 54649), (633, 31857), (777, 25953), (861, 23421), (1477, 13653), (1517, 13293), (1899, 10619), (2331, 8651), (2583, 7807), (4431, 4551)]