19904456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 44513280

約数和(自身を除く): 24608824

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 127, 137, 143, 254, 274, 286, 508, 548, 572, 1016, 1096, 1144, 1397, 1507, 1651, 1781, 2794, 3014, 3302, 3562, 5588, 6028, 6604, 7124, 11176, 12056, 13208, 14248, 17399, 18161, 19591, 34798, 36322, 39182, 69596, 72644, 78364, 139192, 145288, 156728, 191389, 226187, 382778, 452374, 765556, 904748, 1531112, 1809496, 2488057, 4976114, 9952228, 19904456]

約数ペア:

[(1, 19904456), (2, 9952228), (4, 4976114), (8, 2488057), (11, 1809496), (13, 1531112), (22, 904748), (26, 765556), (44, 452374), (52, 382778), (88, 226187), (104, 191389), (127, 156728), (137, 145288), (143, 139192), (254, 78364), (274, 72644), (286, 69596), (508, 39182), (548, 36322), (572, 34798), (1016, 19591), (1096, 18161), (1144, 17399), (1397, 14248), (1507, 13208), (1651, 12056), (1781, 11176), (2794, 7124), (3014, 6604), (3302, 6028), (3562, 5588)]