20318220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:504

約数の個数: 144

約数和(自身を含む): 70019040

約数和(自身を除く): 49700820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 457, 468, 494, 570, 585, 684, 741, 780, 855, 914, 988, 1140, 1170, 1235, 1371, 1482, 1710, 1828, 2223, 2285, 2340, 2470, 2742, 2964, 3420, 3705, 4113, 4446, 4570, 4940, 5484, 5941, 6855, 7410, 8226, 8683, 8892, 9140, 11115, 11882, 13710, 14820, 16452, 17366, 17823, 20565, 22230, 23764, 26049, 27420, 29705, 34732, 35646, 41130, 43415, 44460, 52098, 53469, 59410, 71292, 78147, 82260, 86830, 89115, 104196, 106938, 112879, 118820, 130245, 156294, 173660, 178230, 213876, 225758, 260490, 267345, 312588, 338637, 356460, 390735, 451516, 520980, 534690, 564395, 677274, 781470, 1015911, 1069380, 1128790, 1354548, 1562940, 1693185, 2031822, 2257580, 3386370, 4063644, 5079555, 6772740, 10159110, 20318220]

約数ペア:

[(1, 20318220), (2, 10159110), (3, 6772740), (4, 5079555), (5, 4063644), (6, 3386370), (9, 2257580), (10, 2031822), (12, 1693185), (13, 1562940), (15, 1354548), (18, 1128790), (19, 1069380), (20, 1015911), (26, 781470), (30, 677274), (36, 564395), (38, 534690), (39, 520980), (45, 451516), (52, 390735), (57, 356460), (60, 338637), (65, 312588), (76, 267345), (78, 260490), (90, 225758), (95, 213876), (114, 178230), (117, 173660), (130, 156294), (156, 130245), (171, 118820), (180, 112879), (190, 106938), (195, 104196), (228, 89115), (234, 86830), (247, 82260), (260, 78147), (285, 71292), (342, 59410), (380, 53469), (390, 52098), (457, 44460), (468, 43415), (494, 41130), (570, 35646), (585, 34732), (684, 29705), (741, 27420), (780, 26049), (855, 23764), (914, 22230), (988, 20565), (1140, 17823), (1170, 17366), (1235, 16452), (1371, 14820), (1482, 13710), (1710, 11882), (1828, 11115), (2223, 9140), (2285, 8892), (2340, 8683), (2470, 8226), (2742, 7410), (2964, 6855), (3420, 5941), (3705, 5484), (4113, 4940), (4446, 4570)]