400733440

素因数分解:

$2^8\times 5^1\times {\mathrm{337}}^1\times {\mathrm{929}}^1$

素因数の和:1287

約数の個数: 72

約数和(自身を含む): 963766440

約数和(自身を除く): 563033000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 337, 640, 674, 929, 1280, 1348, 1685, 1858, 2696, 3370, 3716, 4645, 5392, 6740, 7432, 9290, 10784, 13480, 14864, 18580, 21568, 26960, 29728, 37160, 43136, 53920, 59456, 74320, 86272, 107840, 118912, 148640, 215680, 237824, 297280, 313073, 431360, 594560, 626146, 1189120, 1252292, 1565365, 2504584, 3130730, 5009168, 6261460, 10018336, 12522920, 20036672, 25045840, 40073344, 50091680, 80146688, 100183360, 200366720, 400733440]

約数ペア:

[(1, 400733440), (2, 200366720), (4, 100183360), (5, 80146688), (8, 50091680), (10, 40073344), (16, 25045840), (20, 20036672), (32, 12522920), (40, 10018336), (64, 6261460), (80, 5009168), (128, 3130730), (160, 2504584), (256, 1565365), (320, 1252292), (337, 1189120), (640, 626146), (674, 594560), (929, 431360), (1280, 313073), (1348, 297280), (1685, 237824), (1858, 215680), (2696, 148640), (3370, 118912), (3716, 107840), (4645, 86272), (5392, 74320), (6740, 59456), (7432, 53920), (9290, 43136), (10784, 37160), (13480, 29728), (14864, 26960), (18580, 21568)]