19893808

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 45666720

約数和(自身を除く): 25772912

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 61, 68, 88, 109, 122, 136, 176, 187, 218, 244, 272, 374, 436, 488, 671, 748, 872, 976, 1037, 1199, 1342, 1496, 1744, 1853, 2074, 2398, 2684, 2992, 3706, 4148, 4796, 5368, 6649, 7412, 8296, 9592, 10736, 11407, 13298, 14824, 16592, 19184, 20383, 22814, 26596, 29648, 40766, 45628, 53192, 73139, 81532, 91256, 106384, 113033, 146278, 163064, 182512, 226066, 292556, 326128, 452132, 585112, 904264, 1170224, 1243363, 1808528, 2486726, 4973452, 9946904, 19893808]

約数ペア:

[(1, 19893808), (2, 9946904), (4, 4973452), (8, 2486726), (11, 1808528), (16, 1243363), (17, 1170224), (22, 904264), (34, 585112), (44, 452132), (61, 326128), (68, 292556), (88, 226066), (109, 182512), (122, 163064), (136, 146278), (176, 113033), (187, 106384), (218, 91256), (244, 81532), (272, 73139), (374, 53192), (436, 45628), (488, 40766), (671, 29648), (748, 26596), (872, 22814), (976, 20383), (1037, 19184), (1199, 16592), (1342, 14824), (1496, 13298), (1744, 11407), (1853, 10736), (2074, 9592), (2398, 8296), (2684, 7412), (2992, 6649), (3706, 5368), (4148, 4796)]