21254692

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{16451}}^1$

素因数の和:16491

約数の個数: 24

約数和(自身を含む): 41459040

約数和(自身を除く): 20204348

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 16451, 32902, 65804, 279667, 312569, 559334, 625138, 1118668, 1250276, 5313673, 10627346, 21254692]

約数ペア:

[(1, 21254692), (2, 10627346), (4, 5313673), (17, 1250276), (19, 1118668), (34, 625138), (38, 559334), (68, 312569), (76, 279667), (323, 65804), (646, 32902), (1292, 16451)]