21987522

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{269}}^1$

素因数の和:535

約数の個数: 48

約数和(自身を含む): 50544000

約数和(自身を除く): 28556478

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 239, 269, 342, 478, 538, 717, 807, 1434, 1614, 2151, 2421, 4302, 4541, 4842, 5111, 9082, 10222, 13623, 15333, 27246, 30666, 40869, 45999, 64291, 81738, 91998, 128582, 192873, 385746, 578619, 1157238, 1221529, 2443058, 3664587, 7329174, 10993761, 21987522]

約数ペア:

[(1, 21987522), (2, 10993761), (3, 7329174), (6, 3664587), (9, 2443058), (18, 1221529), (19, 1157238), (38, 578619), (57, 385746), (114, 192873), (171, 128582), (239, 91998), (269, 81738), (342, 64291), (478, 45999), (538, 40869), (717, 30666), (807, 27246), (1434, 15333), (1614, 13623), (2151, 10222), (2421, 9082), (4302, 5111), (4541, 4842)]