845373440

素因数分解:

$2^{13}\times 5^1\times {\mathrm{20639}}^1$

素因数の和:20670

約数の個数: 56

約数和(自身を含む): 2028870720

約数和(自身を除く): 1183497280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 8192, 10240, 20480, 20639, 40960, 41278, 82556, 103195, 165112, 206390, 330224, 412780, 660448, 825560, 1320896, 1651120, 2641792, 3302240, 5283584, 6604480, 10567168, 13208960, 21134336, 26417920, 42268672, 52835840, 84537344, 105671680, 169074688, 211343360, 422686720, 845373440]

約数ペア:

[(1, 845373440), (2, 422686720), (4, 211343360), (5, 169074688), (8, 105671680), (10, 84537344), (16, 52835840), (20, 42268672), (32, 26417920), (40, 21134336), (64, 13208960), (80, 10567168), (128, 6604480), (160, 5283584), (256, 3302240), (320, 2641792), (512, 1651120), (640, 1320896), (1024, 825560), (1280, 660448), (2048, 412780), (2560, 330224), (4096, 206390), (5120, 165112), (8192, 103195), (10240, 82556), (20480, 41278), (20639, 40960)]