279580000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{1997}}^1$

素因数の和:2034

約数の個数: 120

約数和(自身を含む): 786460752

約数和(自身を除く): 506880752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 160, 175, 200, 224, 250, 280, 350, 400, 500, 560, 625, 700, 800, 875, 1000, 1120, 1250, 1400, 1750, 1997, 2000, 2500, 2800, 3500, 3994, 4000, 4375, 5000, 5600, 7000, 7988, 8750, 9985, 10000, 13979, 14000, 15976, 17500, 19970, 20000, 27958, 28000, 31952, 35000, 39940, 49925, 55916, 63904, 69895, 70000, 79880, 99850, 111832, 139790, 140000, 159760, 199700, 223664, 249625, 279580, 319520, 349475, 399400, 447328, 499250, 559160, 698950, 798800, 998500, 1118320, 1248125, 1397900, 1597600, 1747375, 1997000, 2236640, 2496250, 2795800, 3494750, 3994000, 4992500, 5591600, 6989500, 7988000, 8736875, 9985000, 11183200, 13979000, 17473750, 19970000, 27958000, 34947500, 39940000, 55916000, 69895000, 139790000, 279580000]

約数ペア:

[(1, 279580000), (2, 139790000), (4, 69895000), (5, 55916000), (7, 39940000), (8, 34947500), (10, 27958000), (14, 19970000), (16, 17473750), (20, 13979000), (25, 11183200), (28, 9985000), (32, 8736875), (35, 7988000), (40, 6989500), (50, 5591600), (56, 4992500), (70, 3994000), (80, 3494750), (100, 2795800), (112, 2496250), (125, 2236640), (140, 1997000), (160, 1747375), (175, 1597600), (200, 1397900), (224, 1248125), (250, 1118320), (280, 998500), (350, 798800), (400, 698950), (500, 559160), (560, 499250), (625, 447328), (700, 399400), (800, 349475), (875, 319520), (1000, 279580), (1120, 249625), (1250, 223664), (1400, 199700), (1750, 159760), (1997, 140000), (2000, 139790), (2500, 111832), (2800, 99850), (3500, 79880), (3994, 70000), (4000, 69895), (4375, 63904), (5000, 55916), (5600, 49925), (7000, 39940), (7988, 35000), (8750, 31952), (9985, 28000), (10000, 27958), (13979, 20000), (14000, 19970), (15976, 17500)]