31781124

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 84756672

約数和(自身を除く): 52975548

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 131, 138, 207, 262, 276, 293, 393, 414, 524, 586, 786, 828, 879, 1172, 1179, 1572, 1758, 2358, 2637, 3013, 3516, 4716, 5274, 6026, 6739, 9039, 10548, 12052, 13478, 18078, 20217, 26956, 27117, 36156, 38383, 40434, 54234, 60651, 76766, 80868, 108468, 115149, 121302, 153532, 230298, 242604, 345447, 460596, 690894, 882809, 1381788, 1765618, 2648427, 3531236, 5296854, 7945281, 10593708, 15890562, 31781124]

約数ペア:

[(1, 31781124), (2, 15890562), (3, 10593708), (4, 7945281), (6, 5296854), (9, 3531236), (12, 2648427), (18, 1765618), (23, 1381788), (36, 882809), (46, 690894), (69, 460596), (92, 345447), (131, 242604), (138, 230298), (207, 153532), (262, 121302), (276, 115149), (293, 108468), (393, 80868), (414, 76766), (524, 60651), (586, 54234), (786, 40434), (828, 38383), (879, 36156), (1172, 27117), (1179, 26956), (1572, 20217), (1758, 18078), (2358, 13478), (2637, 12052), (3013, 10548), (3516, 9039), (4716, 6739), (5274, 6026)]