253021990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:517

約数の個数: 64

約数和(自身を含む): 505128960

約数和(自身を除く): 252106970

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 79, 130, 142, 158, 347, 355, 395, 694, 710, 790, 923, 1027, 1735, 1846, 2054, 3470, 4511, 4615, 5135, 5609, 9022, 9230, 10270, 11218, 22555, 24637, 27413, 28045, 45110, 49274, 54826, 56090, 72917, 123185, 137065, 145834, 246370, 274130, 320281, 356369, 364585, 640562, 712738, 729170, 1601405, 1781845, 1946323, 3202810, 3563690, 3892646, 9731615, 19463230, 25302199, 50604398, 126510995, 253021990]

約数ペア:

[(1, 253021990), (2, 126510995), (5, 50604398), (10, 25302199), (13, 19463230), (26, 9731615), (65, 3892646), (71, 3563690), (79, 3202810), (130, 1946323), (142, 1781845), (158, 1601405), (347, 729170), (355, 712738), (395, 640562), (694, 364585), (710, 356369), (790, 320281), (923, 274130), (1027, 246370), (1735, 145834), (1846, 137065), (2054, 123185), (3470, 72917), (4511, 56090), (4615, 54826), (5135, 49274), (5609, 45110), (9022, 28045), (9230, 27413), (10270, 24637), (11218, 22555)]