20199775640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2423}}^1\times {\mathrm{18947}}^1$

素因数の和:21392

約数の個数: 64

約数和(自身を含む): 49604348160

約数和(自身を除く): 29404572520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2423, 4846, 9692, 12115, 18947, 19384, 24230, 26653, 37894, 48460, 53306, 75788, 94735, 96920, 106612, 133265, 151576, 189470, 208417, 213224, 266530, 378940, 416834, 533060, 757880, 833668, 1042085, 1066120, 1667336, 2084170, 4168340, 8336680, 45908581, 91817162, 183634324, 229542905, 367268648, 459085810, 504994391, 918171620, 1009988782, 1836343240, 2019977564, 2524971955, 4039955128, 5049943910, 10099887820, 20199775640]

約数ペア:

[(1, 20199775640), (2, 10099887820), (4, 5049943910), (5, 4039955128), (8, 2524971955), (10, 2019977564), (11, 1836343240), (20, 1009988782), (22, 918171620), (40, 504994391), (44, 459085810), (55, 367268648), (88, 229542905), (110, 183634324), (220, 91817162), (440, 45908581), (2423, 8336680), (4846, 4168340), (9692, 2084170), (12115, 1667336), (18947, 1066120), (19384, 1042085), (24230, 833668), (26653, 757880), (37894, 533060), (48460, 416834), (53306, 378940), (75788, 266530), (94735, 213224), (96920, 208417), (106612, 189470), (133265, 151576)]