19203965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 64

約数和(自身を含む): 29859840

約数和(自身を除く): 10655875

約数列:

[1, 5, 11, 17, 19, 23, 47, 55, 85, 95, 115, 187, 209, 235, 253, 323, 391, 437, 517, 799, 893, 935, 1045, 1081, 1265, 1615, 1955, 2185, 2585, 3553, 3995, 4301, 4465, 4807, 5405, 7429, 8789, 9823, 11891, 15181, 17765, 18377, 20539, 21505, 24035, 37145, 43945, 49115, 59455, 75905, 81719, 91885, 102695, 166991, 202147, 225929, 349163, 408595, 834955, 1010735, 1129645, 1745815, 3840793, 19203965]

約数ペア:

[(1, 19203965), (5, 3840793), (11, 1745815), (17, 1129645), (19, 1010735), (23, 834955), (47, 408595), (55, 349163), (85, 225929), (95, 202147), (115, 166991), (187, 102695), (209, 91885), (235, 81719), (253, 75905), (323, 59455), (391, 49115), (437, 43945), (517, 37145), (799, 24035), (893, 21505), (935, 20539), (1045, 18377), (1081, 17765), (1265, 15181), (1615, 11891), (1955, 9823), (2185, 8789), (2585, 7429), (3553, 5405), (3995, 4807), (4301, 4465)]