2019906175

素因数分解:

$5^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 2992308480

約数和(自身を除く): 972402305

約数列:

[1, 5, 7, 25, 35, 49, 89, 97, 175, 191, 245, 445, 485, 623, 679, 955, 1225, 1337, 2225, 2425, 3115, 3395, 4361, 4753, 4775, 6685, 8633, 9359, 15575, 16975, 16999, 18527, 21805, 23765, 33425, 43165, 46795, 60431, 84995, 92635, 109025, 118825, 118993, 129689, 215825, 233975, 302155, 423017, 424975, 463175, 594965, 648445, 832951, 907823, 1510775, 1648903, 2115085, 2974825, 3242225, 4164755, 4539115, 8244515, 10575425, 11542321, 20823775, 22695575, 41222575, 57711605, 80796247, 288558025, 403981235, 2019906175]

約数ペア:

[(1, 2019906175), (5, 403981235), (7, 288558025), (25, 80796247), (35, 57711605), (49, 41222575), (89, 22695575), (97, 20823775), (175, 11542321), (191, 10575425), (245, 8244515), (445, 4539115), (485, 4164755), (623, 3242225), (679, 2974825), (955, 2115085), (1225, 1648903), (1337, 1510775), (2225, 907823), (2425, 832951), (3115, 648445), (3395, 594965), (4361, 463175), (4753, 424975), (4775, 423017), (6685, 302155), (8633, 233975), (9359, 215825), (15575, 129689), (16975, 118993), (16999, 118825), (18527, 109025), (21805, 92635), (23765, 84995), (33425, 60431), (43165, 46795)]