21705570

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:357

約数の個数: 80

約数和(自身を含む): 59102208

約数和(自身を除く): 37396638

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 127, 135, 162, 211, 254, 270, 381, 405, 422, 633, 635, 762, 810, 1055, 1143, 1266, 1270, 1899, 1905, 2110, 2286, 3165, 3429, 3798, 3810, 5697, 5715, 6330, 6858, 9495, 10287, 11394, 11430, 17091, 17145, 18990, 20574, 26797, 28485, 34182, 34290, 51435, 53594, 56970, 80391, 85455, 102870, 133985, 160782, 170910, 241173, 267970, 401955, 482346, 723519, 803910, 1205865, 1447038, 2170557, 2411730, 3617595, 4341114, 7235190, 10852785, 21705570]

約数ペア:

[(1, 21705570), (2, 10852785), (3, 7235190), (5, 4341114), (6, 3617595), (9, 2411730), (10, 2170557), (15, 1447038), (18, 1205865), (27, 803910), (30, 723519), (45, 482346), (54, 401955), (81, 267970), (90, 241173), (127, 170910), (135, 160782), (162, 133985), (211, 102870), (254, 85455), (270, 80391), (381, 56970), (405, 53594), (422, 51435), (633, 34290), (635, 34182), (762, 28485), (810, 26797), (1055, 20574), (1143, 18990), (1266, 17145), (1270, 17091), (1899, 11430), (1905, 11394), (2110, 10287), (2286, 9495), (3165, 6858), (3429, 6330), (3798, 5715), (3810, 5697)]