18859280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{739}}^1$

素因数の和:792

約数の個数: 80

約数和(自身を含む): 49550400

約数和(自身を除く): 30691120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 110, 116, 145, 176, 220, 232, 290, 319, 440, 464, 580, 638, 739, 880, 1160, 1276, 1478, 1595, 2320, 2552, 2956, 3190, 3695, 5104, 5912, 6380, 7390, 8129, 11824, 12760, 14780, 16258, 21431, 25520, 29560, 32516, 40645, 42862, 59120, 65032, 81290, 85724, 107155, 130064, 162580, 171448, 214310, 235741, 325160, 342896, 428620, 471482, 650320, 857240, 942964, 1178705, 1714480, 1885928, 2357410, 3771856, 4714820, 9429640, 18859280]

約数ペア:

[(1, 18859280), (2, 9429640), (4, 4714820), (5, 3771856), (8, 2357410), (10, 1885928), (11, 1714480), (16, 1178705), (20, 942964), (22, 857240), (29, 650320), (40, 471482), (44, 428620), (55, 342896), (58, 325160), (80, 235741), (88, 214310), (110, 171448), (116, 162580), (145, 130064), (176, 107155), (220, 85724), (232, 81290), (290, 65032), (319, 59120), (440, 42862), (464, 40645), (580, 32516), (638, 29560), (739, 25520), (880, 21431), (1160, 16258), (1276, 14780), (1478, 12760), (1595, 11824), (2320, 8129), (2552, 7390), (2956, 6380), (3190, 5912), (3695, 5104)]