55780020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{719}}^1$

素因数の和:1165

約数の個数: 72

約数和(自身を含む): 169827840

約数和(自身を除く): 114047820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 431, 719, 862, 1293, 1438, 1724, 2155, 2157, 2586, 2876, 3595, 3879, 4310, 4314, 5172, 6465, 6471, 7190, 7758, 8620, 8628, 10785, 12930, 12942, 14380, 15516, 19395, 21570, 25860, 25884, 32355, 38790, 43140, 64710, 77580, 129420, 309889, 619778, 929667, 1239556, 1549445, 1859334, 2789001, 3098890, 3718668, 4648335, 5578002, 6197780, 9296670, 11156004, 13945005, 18593340, 27890010, 55780020]

約数ペア:

[(1, 55780020), (2, 27890010), (3, 18593340), (4, 13945005), (5, 11156004), (6, 9296670), (9, 6197780), (10, 5578002), (12, 4648335), (15, 3718668), (18, 3098890), (20, 2789001), (30, 1859334), (36, 1549445), (45, 1239556), (60, 929667), (90, 619778), (180, 309889), (431, 129420), (719, 77580), (862, 64710), (1293, 43140), (1438, 38790), (1724, 32355), (2155, 25884), (2157, 25860), (2586, 21570), (2876, 19395), (3595, 15516), (3879, 14380), (4310, 12942), (4314, 12930), (5172, 10785), (6465, 8628), (6471, 8620), (7190, 7758)]