19900908

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 52437840

約数和(自身を除く): 32536932

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 82, 97, 123, 139, 164, 194, 246, 278, 291, 369, 388, 417, 492, 556, 582, 738, 834, 873, 1164, 1251, 1476, 1668, 1746, 2502, 3492, 3977, 5004, 5699, 7954, 11398, 11931, 13483, 15908, 17097, 22796, 23862, 26966, 34194, 35793, 40449, 47724, 51291, 53932, 68388, 71586, 80898, 102582, 121347, 143172, 161796, 205164, 242694, 485388, 552803, 1105606, 1658409, 2211212, 3316818, 4975227, 6633636, 9950454, 19900908]

約数ペア:

[(1, 19900908), (2, 9950454), (3, 6633636), (4, 4975227), (6, 3316818), (9, 2211212), (12, 1658409), (18, 1105606), (36, 552803), (41, 485388), (82, 242694), (97, 205164), (123, 161796), (139, 143172), (164, 121347), (194, 102582), (246, 80898), (278, 71586), (291, 68388), (369, 53932), (388, 51291), (417, 47724), (492, 40449), (556, 35793), (582, 34194), (738, 26966), (834, 23862), (873, 22796), (1164, 17097), (1251, 15908), (1476, 13483), (1668, 11931), (1746, 11398), (2502, 7954), (3492, 5699), (3977, 5004)]