19880344

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 43817760

約数和(自身を除く): 23937416

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 88, 97, 136, 137, 187, 194, 274, 374, 388, 548, 748, 776, 1067, 1096, 1496, 1507, 1649, 2134, 2329, 3014, 3298, 4268, 4658, 6028, 6596, 8536, 9316, 12056, 13192, 13289, 18139, 18632, 25619, 26578, 36278, 51238, 53156, 72556, 102476, 106312, 145112, 146179, 204952, 225913, 292358, 451826, 584716, 903652, 1169432, 1807304, 2485043, 4970086, 9940172, 19880344]

約数ペア:

[(1, 19880344), (2, 9940172), (4, 4970086), (8, 2485043), (11, 1807304), (17, 1169432), (22, 903652), (34, 584716), (44, 451826), (68, 292358), (88, 225913), (97, 204952), (136, 146179), (137, 145112), (187, 106312), (194, 102476), (274, 72556), (374, 53156), (388, 51238), (548, 36278), (748, 26578), (776, 25619), (1067, 18632), (1096, 18139), (1496, 13289), (1507, 13192), (1649, 12056), (2134, 9316), (2329, 8536), (3014, 6596), (3298, 6028), (4268, 4658)]