19659366940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{153421}}^1$

素因数の和:153622

約数の個数: 48

約数和(自身を含む): 42528578400

約数和(自身を除く): 22869211460

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 149, 172, 215, 298, 430, 596, 745, 860, 1490, 2980, 6407, 12814, 25628, 32035, 64070, 128140, 153421, 306842, 613684, 767105, 1534210, 3068420, 6597103, 13194206, 22859729, 26388412, 32985515, 45719458, 65971030, 91438916, 114298645, 131942060, 228597290, 457194580, 982968347, 1965936694, 3931873388, 4914841735, 9829683470, 19659366940]

約数ペア:

[(1, 19659366940), (2, 9829683470), (4, 4914841735), (5, 3931873388), (10, 1965936694), (20, 982968347), (43, 457194580), (86, 228597290), (149, 131942060), (172, 114298645), (215, 91438916), (298, 65971030), (430, 45719458), (596, 32985515), (745, 26388412), (860, 22859729), (1490, 13194206), (2980, 6597103), (6407, 3068420), (12814, 1534210), (25628, 767105), (32035, 613684), (64070, 306842), (128140, 153421)]