19808008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 42923520

約数和(自身を除く): 23115512

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 53, 62, 88, 106, 124, 137, 212, 248, 274, 341, 424, 548, 583, 682, 1096, 1166, 1364, 1507, 1643, 2332, 2728, 3014, 3286, 4247, 4664, 6028, 6572, 7261, 8494, 12056, 13144, 14522, 16988, 18073, 29044, 33976, 36146, 46717, 58088, 72292, 79871, 93434, 144584, 159742, 186868, 225091, 319484, 373736, 450182, 638968, 900364, 1800728, 2476001, 4952002, 9904004, 19808008]

約数ペア:

[(1, 19808008), (2, 9904004), (4, 4952002), (8, 2476001), (11, 1800728), (22, 900364), (31, 638968), (44, 450182), (53, 373736), (62, 319484), (88, 225091), (106, 186868), (124, 159742), (137, 144584), (212, 93434), (248, 79871), (274, 72292), (341, 58088), (424, 46717), (548, 36146), (583, 33976), (682, 29044), (1096, 18073), (1166, 16988), (1364, 14522), (1507, 13144), (1643, 12056), (2332, 8494), (2728, 7261), (3014, 6572), (3286, 6028), (4247, 4664)]