405990640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{337}}^1$

素因数の和:435

約数の個数: 120

約数和(自身を含む): 1061463312

約数和(自身を除く): 655472672

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 337, 370, 407, 440, 592, 674, 740, 814, 880, 1348, 1369, 1480, 1628, 1685, 2035, 2696, 2738, 2960, 3256, 3370, 3707, 4070, 5392, 5476, 6512, 6740, 6845, 7414, 8140, 10952, 12469, 13480, 13690, 14828, 15059, 16280, 18535, 21904, 24938, 26960, 27380, 29656, 30118, 32560, 37070, 49876, 54760, 59312, 60236, 62345, 74140, 75295, 99752, 109520, 120472, 124690, 137159, 148280, 150590, 199504, 240944, 249380, 274318, 296560, 301180, 461353, 498760, 548636, 602360, 685795, 922706, 997520, 1097272, 1204720, 1371590, 1845412, 2194544, 2306765, 2743180, 3690824, 4613530, 5074883, 5486360, 7381648, 9227060, 10149766, 10972720, 18454120, 20299532, 25374415, 36908240, 40599064, 50748830, 81198128, 101497660, 202995320, 405990640]

約数ペア:

[(1, 405990640), (2, 202995320), (4, 101497660), (5, 81198128), (8, 50748830), (10, 40599064), (11, 36908240), (16, 25374415), (20, 20299532), (22, 18454120), (37, 10972720), (40, 10149766), (44, 9227060), (55, 7381648), (74, 5486360), (80, 5074883), (88, 4613530), (110, 3690824), (148, 2743180), (176, 2306765), (185, 2194544), (220, 1845412), (296, 1371590), (337, 1204720), (370, 1097272), (407, 997520), (440, 922706), (592, 685795), (674, 602360), (740, 548636), (814, 498760), (880, 461353), (1348, 301180), (1369, 296560), (1480, 274318), (1628, 249380), (1685, 240944), (2035, 199504), (2696, 150590), (2738, 148280), (2960, 137159), (3256, 124690), (3370, 120472), (3707, 109520), (4070, 99752), (5392, 75295), (5476, 74140), (6512, 62345), (6740, 60236), (6845, 59312), (7414, 54760), (8140, 49876), (10952, 37070), (12469, 32560), (13480, 30118), (13690, 29656), (14828, 27380), (15059, 26960), (16280, 24938), (18535, 21904)]