20041420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:179

約数の個数: 96

約数和(自身を含む): 51020928

約数和(自身を除く): 30979508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 53, 70, 73, 74, 106, 140, 146, 148, 185, 212, 259, 265, 292, 365, 370, 371, 511, 518, 530, 730, 740, 742, 1022, 1036, 1060, 1295, 1460, 1484, 1855, 1961, 2044, 2555, 2590, 2701, 3710, 3869, 3922, 5110, 5180, 5402, 7420, 7738, 7844, 9805, 10220, 10804, 13505, 13727, 15476, 18907, 19345, 19610, 27010, 27083, 27454, 37814, 38690, 39220, 54020, 54166, 54908, 68635, 75628, 77380, 94535, 108332, 135415, 137270, 143153, 189070, 270830, 274540, 286306, 378140, 541660, 572612, 715765, 1002071, 1431530, 2004142, 2863060, 4008284, 5010355, 10020710, 20041420]

約数ペア:

[(1, 20041420), (2, 10020710), (4, 5010355), (5, 4008284), (7, 2863060), (10, 2004142), (14, 1431530), (20, 1002071), (28, 715765), (35, 572612), (37, 541660), (53, 378140), (70, 286306), (73, 274540), (74, 270830), (106, 189070), (140, 143153), (146, 137270), (148, 135415), (185, 108332), (212, 94535), (259, 77380), (265, 75628), (292, 68635), (365, 54908), (370, 54166), (371, 54020), (511, 39220), (518, 38690), (530, 37814), (730, 27454), (740, 27083), (742, 27010), (1022, 19610), (1036, 19345), (1060, 18907), (1295, 15476), (1460, 13727), (1484, 13505), (1855, 10804), (1961, 10220), (2044, 9805), (2555, 7844), (2590, 7738), (2701, 7420), (3710, 5402), (3869, 5180), (3922, 5110)]