21009488

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1543}}^1$

素因数の和:1611

約数の個数: 40

約数和(自身を含む): 43651968

約数和(自身を除く): 22642480

約数列:

[1, 2, 4, 8, 16, 23, 37, 46, 74, 92, 148, 184, 296, 368, 592, 851, 1543, 1702, 3086, 3404, 6172, 6808, 12344, 13616, 24688, 35489, 57091, 70978, 114182, 141956, 228364, 283912, 456728, 567824, 913456, 1313093, 2626186, 5252372, 10504744, 21009488]

約数ペア:

[(1, 21009488), (2, 10504744), (4, 5252372), (8, 2626186), (16, 1313093), (23, 913456), (37, 567824), (46, 456728), (74, 283912), (92, 228364), (148, 141956), (184, 114182), (296, 70978), (368, 57091), (592, 35489), (851, 24688), (1543, 13616), (1702, 12344), (3086, 6808), (3404, 6172)]