261639393418

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{1087}}^1\times {\mathrm{4157}}^1$

素因数の和:5407

約数の個数: 64

約数和(自身を含む): 451449427968

約数和(自身を除く): 189810034550

約数列:

[1, 2, 13, 17, 26, 34, 131, 221, 262, 442, 1087, 1703, 2174, 2227, 3406, 4157, 4454, 8314, 14131, 18479, 28262, 28951, 36958, 54041, 57902, 70669, 108082, 141338, 142397, 240227, 284794, 480454, 544567, 918697, 1089134, 1837394, 1851161, 2420749, 3702322, 4518659, 4841498, 7079371, 9037318, 9257639, 14158742, 18515278, 31469737, 58742567, 62939474, 76817203, 117485134, 120349307, 153634406, 240698614, 591944329, 998623639, 1183888658, 1997247278, 7695276277, 10063053593, 15390552554, 20126107186, 130819696709, 261639393418]

約数ペア:

[(1, 261639393418), (2, 130819696709), (13, 20126107186), (17, 15390552554), (26, 10063053593), (34, 7695276277), (131, 1997247278), (221, 1183888658), (262, 998623639), (442, 591944329), (1087, 240698614), (1703, 153634406), (2174, 120349307), (2227, 117485134), (3406, 76817203), (4157, 62939474), (4454, 58742567), (8314, 31469737), (14131, 18515278), (18479, 14158742), (28262, 9257639), (28951, 9037318), (36958, 7079371), (54041, 4841498), (57902, 4518659), (70669, 3702322), (108082, 2420749), (141338, 1851161), (142397, 1837394), (240227, 1089134), (284794, 918697), (480454, 544567)]