71813420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{577}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 177117696

約数和(自身を除く): 105304276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 127, 140, 196, 245, 254, 490, 508, 577, 635, 889, 980, 1154, 1270, 1778, 2308, 2540, 2885, 3556, 4039, 4445, 5770, 6223, 8078, 8890, 11540, 12446, 16156, 17780, 20195, 24892, 28273, 31115, 40390, 56546, 62230, 73279, 80780, 113092, 124460, 141365, 146558, 282730, 293116, 366395, 512953, 565460, 732790, 1025906, 1465580, 2051812, 2564765, 3590671, 5129530, 7181342, 10259060, 14362684, 17953355, 35906710, 71813420]

約数ペア:

[(1, 71813420), (2, 35906710), (4, 17953355), (5, 14362684), (7, 10259060), (10, 7181342), (14, 5129530), (20, 3590671), (28, 2564765), (35, 2051812), (49, 1465580), (70, 1025906), (98, 732790), (127, 565460), (140, 512953), (196, 366395), (245, 293116), (254, 282730), (490, 146558), (508, 141365), (577, 124460), (635, 113092), (889, 80780), (980, 73279), (1154, 62230), (1270, 56546), (1778, 40390), (2308, 31115), (2540, 28273), (2885, 24892), (3556, 20195), (4039, 17780), (4445, 16156), (5770, 12446), (6223, 11540), (8078, 8890)]