18906448

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:196

約数の個数: 80

約数和(自身を含む): 43390080

約数和(自身を除く): 24483632

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 71, 88, 89, 136, 142, 176, 178, 187, 272, 284, 356, 374, 568, 712, 748, 781, 979, 1136, 1207, 1424, 1496, 1513, 1562, 1958, 2414, 2992, 3026, 3124, 3916, 4828, 6052, 6248, 6319, 7832, 9656, 12104, 12496, 12638, 13277, 15664, 16643, 19312, 24208, 25276, 26554, 33286, 50552, 53108, 66572, 69509, 101104, 106216, 107423, 133144, 139018, 212432, 214846, 266288, 278036, 429692, 556072, 859384, 1112144, 1181653, 1718768, 2363306, 4726612, 9453224, 18906448]

約数ペア:

[(1, 18906448), (2, 9453224), (4, 4726612), (8, 2363306), (11, 1718768), (16, 1181653), (17, 1112144), (22, 859384), (34, 556072), (44, 429692), (68, 278036), (71, 266288), (88, 214846), (89, 212432), (136, 139018), (142, 133144), (176, 107423), (178, 106216), (187, 101104), (272, 69509), (284, 66572), (356, 53108), (374, 50552), (568, 33286), (712, 26554), (748, 25276), (781, 24208), (979, 19312), (1136, 16643), (1207, 15664), (1424, 13277), (1496, 12638), (1513, 12496), (1562, 12104), (1958, 9656), (2414, 7832), (2992, 6319), (3026, 6248), (3124, 6052), (3916, 4828)]