20335130

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 39831264

約数和(自身を除く): 19496134

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 131, 190, 215, 262, 361, 430, 655, 722, 817, 1310, 1634, 1805, 2489, 3610, 4085, 4978, 5633, 8170, 11266, 12445, 15523, 24890, 28165, 31046, 47291, 56330, 77615, 94582, 107027, 155230, 214054, 236455, 472910, 535135, 1070270, 2033513, 4067026, 10167565, 20335130]

約数ペア:

[(1, 20335130), (2, 10167565), (5, 4067026), (10, 2033513), (19, 1070270), (38, 535135), (43, 472910), (86, 236455), (95, 214054), (131, 155230), (190, 107027), (215, 94582), (262, 77615), (361, 56330), (430, 47291), (655, 31046), (722, 28165), (817, 24890), (1310, 15523), (1634, 12445), (1805, 11266), (2489, 8170), (3610, 5633), (4085, 4978)]