1993640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 5132160

約数和(自身を除く): 3138520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 197, 220, 230, 253, 394, 440, 460, 506, 788, 920, 985, 1012, 1265, 1576, 1970, 2024, 2167, 2530, 3940, 4334, 4531, 5060, 7880, 8668, 9062, 10120, 10835, 17336, 18124, 21670, 22655, 36248, 43340, 45310, 49841, 86680, 90620, 99682, 181240, 199364, 249205, 398728, 498410, 996820, 1993640]

約数ペア:

[(1, 1993640), (2, 996820), (4, 498410), (5, 398728), (8, 249205), (10, 199364), (11, 181240), (20, 99682), (22, 90620), (23, 86680), (40, 49841), (44, 45310), (46, 43340), (55, 36248), (88, 22655), (92, 21670), (110, 18124), (115, 17336), (184, 10835), (197, 10120), (220, 9062), (230, 8668), (253, 7880), (394, 5060), (440, 4531), (460, 4334), (506, 3940), (788, 2530), (920, 2167), (985, 2024), (1012, 1970), (1265, 1576)]