19479790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:993

約数の個数: 48

約数和(自身を含む): 40851216

約数和(自身を除く): 21371426

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 121, 170, 187, 242, 374, 605, 935, 947, 1210, 1870, 1894, 2057, 4114, 4735, 9470, 10285, 10417, 16099, 20570, 20834, 32198, 52085, 80495, 104170, 114587, 160990, 177089, 229174, 354178, 572935, 885445, 1145870, 1770890, 1947979, 3895958, 9739895, 19479790]

約数ペア:

[(1, 19479790), (2, 9739895), (5, 3895958), (10, 1947979), (11, 1770890), (17, 1145870), (22, 885445), (34, 572935), (55, 354178), (85, 229174), (110, 177089), (121, 160990), (170, 114587), (187, 104170), (242, 80495), (374, 52085), (605, 32198), (935, 20834), (947, 20570), (1210, 16099), (1870, 10417), (1894, 10285), (2057, 9470), (4114, 4735)]