2181391880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{401}}^1$

素因数の和:591

約数の個数: 128

約数和(自身を含む): 5251599360

約数和(自身を除く): 3070207480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 107, 124, 155, 164, 205, 214, 248, 310, 328, 401, 410, 428, 535, 620, 802, 820, 856, 1070, 1240, 1271, 1604, 1640, 2005, 2140, 2542, 3208, 3317, 4010, 4280, 4387, 5084, 6355, 6634, 8020, 8774, 10168, 12431, 12710, 13268, 16040, 16441, 16585, 17548, 21935, 24862, 25420, 26536, 32882, 33170, 35096, 42907, 43870, 49724, 50840, 62155, 65764, 66340, 82205, 85814, 87740, 99448, 124310, 131528, 132680, 135997, 164410, 171628, 175480, 214535, 248620, 271994, 328820, 343256, 429070, 497240, 509671, 543988, 657640, 679985, 858140, 1019342, 1087976, 1330117, 1359970, 1716280, 1759187, 2038684, 2548355, 2660234, 2719940, 3518374, 4077368, 5096710, 5320468, 5439880, 6650585, 7036748, 8795935, 10193420, 10640936, 13301170, 14073496, 17591870, 20386840, 26602340, 35183740, 53204680, 54534797, 70367480, 109069594, 218139188, 272673985, 436278376, 545347970, 1090695940, 2181391880]

約数ペア:

[(1, 2181391880), (2, 1090695940), (4, 545347970), (5, 436278376), (8, 272673985), (10, 218139188), (20, 109069594), (31, 70367480), (40, 54534797), (41, 53204680), (62, 35183740), (82, 26602340), (107, 20386840), (124, 17591870), (155, 14073496), (164, 13301170), (205, 10640936), (214, 10193420), (248, 8795935), (310, 7036748), (328, 6650585), (401, 5439880), (410, 5320468), (428, 5096710), (535, 4077368), (620, 3518374), (802, 2719940), (820, 2660234), (856, 2548355), (1070, 2038684), (1240, 1759187), (1271, 1716280), (1604, 1359970), (1640, 1330117), (2005, 1087976), (2140, 1019342), (2542, 858140), (3208, 679985), (3317, 657640), (4010, 543988), (4280, 509671), (4387, 497240), (5084, 429070), (6355, 343256), (6634, 328820), (8020, 271994), (8774, 248620), (10168, 214535), (12431, 175480), (12710, 171628), (13268, 164410), (16040, 135997), (16441, 132680), (16585, 131528), (17548, 124310), (21935, 99448), (24862, 87740), (25420, 85814), (26536, 82205), (32882, 66340), (33170, 65764), (35096, 62155), (42907, 50840), (43870, 49724)]