1997179975

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{3307}}^1$

素因数の和:3377

約数の個数: 72

約数和(自身を含む): 3156427440

約数和(自身を除く): 1159247465

約数列:

[1, 5, 7, 17, 25, 29, 35, 49, 85, 119, 145, 175, 203, 245, 425, 493, 595, 725, 833, 1015, 1225, 1421, 2465, 2975, 3307, 3451, 4165, 5075, 7105, 12325, 16535, 17255, 20825, 23149, 24157, 35525, 56219, 82675, 86275, 95903, 115745, 120785, 162043, 281095, 393533, 479515, 578725, 603925, 671321, 810215, 1405475, 1630351, 1967665, 2397575, 2754731, 3356605, 4051075, 4699247, 8151755, 9838325, 11412457, 13773655, 16783025, 23496235, 40758775, 57062285, 68868275, 79887199, 117481175, 285311425, 399435995, 1997179975]

約数ペア:

[(1, 1997179975), (5, 399435995), (7, 285311425), (17, 117481175), (25, 79887199), (29, 68868275), (35, 57062285), (49, 40758775), (85, 23496235), (119, 16783025), (145, 13773655), (175, 11412457), (203, 9838325), (245, 8151755), (425, 4699247), (493, 4051075), (595, 3356605), (725, 2754731), (833, 2397575), (1015, 1967665), (1225, 1630351), (1421, 1405475), (2465, 810215), (2975, 671321), (3307, 603925), (3451, 578725), (4165, 479515), (5075, 393533), (7105, 281095), (12325, 162043), (16535, 120785), (17255, 115745), (20825, 95903), (23149, 86275), (24157, 82675), (35525, 56219)]