20940166

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 48

約数和(自身を含む): 37636704

約数和(自身を除く): 16696538

約数列:

[1, 2, 13, 19, 23, 26, 38, 46, 97, 194, 247, 299, 361, 437, 494, 598, 722, 874, 1261, 1843, 2231, 2522, 3686, 4462, 4693, 5681, 8303, 9386, 11362, 16606, 23959, 29003, 35017, 42389, 47918, 58006, 70034, 84778, 107939, 215878, 455221, 551057, 805391, 910442, 1102114, 1610782, 10470083, 20940166]

約数ペア:

[(1, 20940166), (2, 10470083), (13, 1610782), (19, 1102114), (23, 910442), (26, 805391), (38, 551057), (46, 455221), (97, 215878), (194, 107939), (247, 84778), (299, 70034), (361, 58006), (437, 47918), (494, 42389), (598, 35017), (722, 29003), (874, 23959), (1261, 16606), (1843, 11362), (2231, 9386), (2522, 8303), (3686, 5681), (4462, 4693)]