20211457851

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{467}}^1\times {\mathrm{1787}}^1$

素因数の和:2302

約数の個数: 80

約数和(自身を含む): 34020290304

約数和(自身を除く): 13808832453

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 299, 351, 467, 621, 897, 1053, 1401, 1787, 1863, 2691, 4203, 5361, 6071, 8073, 10741, 12609, 16083, 18213, 23231, 24219, 32223, 37827, 41101, 48249, 54639, 69693, 96669, 123303, 139633, 144747, 163917, 209079, 290007, 369909, 418899, 491751, 534313, 627237, 834529, 870021, 1109727, 1256697, 1602939, 1881711, 2503587, 3329181, 3770091, 4808817, 7510761, 10848877, 11310273, 14426451, 19194167, 22532283, 32546631, 43279353, 57582501, 67596849, 97639893, 172747503, 249524171, 292919679, 518242509, 748572513, 878759037, 1554727527, 2245717539, 6737152617, 20211457851]

約数ペア:

[(1, 20211457851), (3, 6737152617), (9, 2245717539), (13, 1554727527), (23, 878759037), (27, 748572513), (39, 518242509), (69, 292919679), (81, 249524171), (117, 172747503), (207, 97639893), (299, 67596849), (351, 57582501), (467, 43279353), (621, 32546631), (897, 22532283), (1053, 19194167), (1401, 14426451), (1787, 11310273), (1863, 10848877), (2691, 7510761), (4203, 4808817), (5361, 3770091), (6071, 3329181), (8073, 2503587), (10741, 1881711), (12609, 1602939), (16083, 1256697), (18213, 1109727), (23231, 870021), (24219, 834529), (32223, 627237), (37827, 534313), (41101, 491751), (48249, 418899), (54639, 369909), (69693, 290007), (96669, 209079), (123303, 163917), (139633, 144747)]