18928701

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 34007040

約数和(自身を除く): 15078339

約数列:

[1, 3, 9, 11, 17, 23, 27, 33, 51, 69, 99, 153, 163, 187, 207, 253, 297, 391, 459, 489, 561, 621, 759, 1173, 1467, 1683, 1793, 2277, 2771, 3519, 3749, 4301, 4401, 5049, 5379, 6831, 8313, 10557, 11247, 12903, 16137, 24939, 30481, 33741, 38709, 41239, 48411, 63733, 74817, 91443, 101223, 116127, 123717, 191199, 274329, 371151, 573597, 701063, 822987, 1113453, 1720791, 2103189, 6309567, 18928701]

約数ペア:

[(1, 18928701), (3, 6309567), (9, 2103189), (11, 1720791), (17, 1113453), (23, 822987), (27, 701063), (33, 573597), (51, 371151), (69, 274329), (99, 191199), (153, 123717), (163, 116127), (187, 101223), (207, 91443), (253, 74817), (297, 63733), (391, 48411), (459, 41239), (489, 38709), (561, 33741), (621, 30481), (759, 24939), (1173, 16137), (1467, 12903), (1683, 11247), (1793, 10557), (2277, 8313), (2771, 6831), (3519, 5379), (3749, 5049), (4301, 4401)]