20391644

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 45849888

約数和(自身を除く): 25458244

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 53, 91, 98, 106, 151, 182, 196, 212, 302, 364, 371, 604, 637, 689, 742, 1057, 1274, 1378, 1484, 1963, 2114, 2548, 2597, 2756, 3926, 4228, 4823, 5194, 7399, 7852, 8003, 9646, 10388, 13741, 14798, 16006, 19292, 27482, 29596, 32012, 33761, 54964, 56021, 67522, 96187, 104039, 112042, 135044, 192374, 208078, 224084, 384748, 392147, 416156, 728273, 784294, 1456546, 1568588, 2913092, 5097911, 10195822, 20391644]

約数ペア:

[(1, 20391644), (2, 10195822), (4, 5097911), (7, 2913092), (13, 1568588), (14, 1456546), (26, 784294), (28, 728273), (49, 416156), (52, 392147), (53, 384748), (91, 224084), (98, 208078), (106, 192374), (151, 135044), (182, 112042), (196, 104039), (212, 96187), (302, 67522), (364, 56021), (371, 54964), (604, 33761), (637, 32012), (689, 29596), (742, 27482), (1057, 19292), (1274, 16006), (1378, 14798), (1484, 13741), (1963, 10388), (2114, 9646), (2548, 8003), (2597, 7852), (2756, 7399), (3926, 5194), (4228, 4823)]