131488840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:291

約数の個数: 128

約数和(自身を含む): 353295360

約数和(自身を除く): 221806520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 67, 70, 86, 134, 140, 163, 172, 215, 268, 280, 301, 326, 335, 344, 430, 469, 536, 602, 652, 670, 815, 860, 938, 1141, 1204, 1304, 1340, 1505, 1630, 1720, 1876, 2282, 2345, 2408, 2680, 2881, 3010, 3260, 3752, 4564, 4690, 5705, 5762, 6020, 6520, 7009, 9128, 9380, 10921, 11410, 11524, 12040, 14018, 14405, 18760, 20167, 21842, 22820, 23048, 28036, 28810, 35045, 40334, 43684, 45640, 49063, 54605, 56072, 57620, 70090, 76447, 80668, 87368, 98126, 100835, 109210, 115240, 140180, 152894, 161336, 196252, 201670, 218420, 245315, 280360, 305788, 382235, 392504, 403340, 436840, 469603, 490630, 611576, 764470, 806680, 939206, 981260, 1528940, 1878412, 1962520, 2348015, 3057880, 3287221, 3756824, 4696030, 6574442, 9392060, 13148884, 16436105, 18784120, 26297768, 32872210, 65744420, 131488840]

約数ペア:

[(1, 131488840), (2, 65744420), (4, 32872210), (5, 26297768), (7, 18784120), (8, 16436105), (10, 13148884), (14, 9392060), (20, 6574442), (28, 4696030), (35, 3756824), (40, 3287221), (43, 3057880), (56, 2348015), (67, 1962520), (70, 1878412), (86, 1528940), (134, 981260), (140, 939206), (163, 806680), (172, 764470), (215, 611576), (268, 490630), (280, 469603), (301, 436840), (326, 403340), (335, 392504), (344, 382235), (430, 305788), (469, 280360), (536, 245315), (602, 218420), (652, 201670), (670, 196252), (815, 161336), (860, 152894), (938, 140180), (1141, 115240), (1204, 109210), (1304, 100835), (1340, 98126), (1505, 87368), (1630, 80668), (1720, 76447), (1876, 70090), (2282, 57620), (2345, 56072), (2408, 54605), (2680, 49063), (2881, 45640), (3010, 43684), (3260, 40334), (3752, 35045), (4564, 28810), (4690, 28036), (5705, 23048), (5762, 22820), (6020, 21842), (6520, 20167), (7009, 18760), (9128, 14405), (9380, 14018), (10921, 12040), (11410, 11524)]