20048840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 53741880

約数和(自身を除く): 33693040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 53, 56, 70, 98, 106, 140, 193, 196, 212, 245, 265, 280, 371, 386, 392, 424, 490, 530, 742, 772, 965, 980, 1060, 1351, 1484, 1544, 1855, 1930, 1960, 2120, 2597, 2702, 2968, 3710, 3860, 5194, 5404, 6755, 7420, 7720, 9457, 10229, 10388, 10808, 12985, 13510, 14840, 18914, 20458, 20776, 25970, 27020, 37828, 40916, 47285, 51145, 51940, 54040, 71603, 75656, 81832, 94570, 102290, 103880, 143206, 189140, 204580, 286412, 358015, 378280, 409160, 501221, 572824, 716030, 1002442, 1432060, 2004884, 2506105, 2864120, 4009768, 5012210, 10024420, 20048840]

約数ペア:

[(1, 20048840), (2, 10024420), (4, 5012210), (5, 4009768), (7, 2864120), (8, 2506105), (10, 2004884), (14, 1432060), (20, 1002442), (28, 716030), (35, 572824), (40, 501221), (49, 409160), (53, 378280), (56, 358015), (70, 286412), (98, 204580), (106, 189140), (140, 143206), (193, 103880), (196, 102290), (212, 94570), (245, 81832), (265, 75656), (280, 71603), (371, 54040), (386, 51940), (392, 51145), (424, 47285), (490, 40916), (530, 37828), (742, 27020), (772, 25970), (965, 20776), (980, 20458), (1060, 18914), (1351, 14840), (1484, 13510), (1544, 12985), (1855, 10808), (1930, 10388), (1960, 10229), (2120, 9457), (2597, 7720), (2702, 7420), (2968, 6755), (3710, 5404), (3860, 5194)]