31798060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:551

約数の個数: 72

約数和(自身を含む): 78944544

約数和(自身を除く): 47146484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 457, 490, 497, 710, 914, 980, 994, 1420, 1828, 1988, 2285, 2485, 3199, 3479, 4570, 4970, 6398, 6958, 9140, 9940, 12796, 13916, 15995, 17395, 22393, 31990, 32447, 34790, 44786, 63980, 64894, 69580, 89572, 111965, 129788, 162235, 223930, 227129, 324470, 447860, 454258, 648940, 908516, 1135645, 1589903, 2271290, 3179806, 4542580, 6359612, 7949515, 15899030, 31798060]

約数ペア:

[(1, 31798060), (2, 15899030), (4, 7949515), (5, 6359612), (7, 4542580), (10, 3179806), (14, 2271290), (20, 1589903), (28, 1135645), (35, 908516), (49, 648940), (70, 454258), (71, 447860), (98, 324470), (140, 227129), (142, 223930), (196, 162235), (245, 129788), (284, 111965), (355, 89572), (457, 69580), (490, 64894), (497, 63980), (710, 44786), (914, 34790), (980, 32447), (994, 31990), (1420, 22393), (1828, 17395), (1988, 15995), (2285, 13916), (2485, 12796), (3199, 9940), (3479, 9140), (4570, 6958), (4970, 6398)]