998118400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:464

約数の個数: 132

約数和(自身を含む): 2501728768

約数和(自身を除く): 1503610368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 200, 254, 256, 307, 320, 400, 508, 512, 614, 635, 640, 800, 1016, 1024, 1228, 1270, 1280, 1535, 1600, 2032, 2456, 2540, 2560, 3070, 3175, 3200, 4064, 4912, 5080, 5120, 6140, 6350, 6400, 7675, 8128, 9824, 10160, 12280, 12700, 12800, 15350, 16256, 19648, 20320, 24560, 25400, 25600, 30700, 32512, 38989, 39296, 40640, 49120, 50800, 61400, 65024, 77978, 78592, 81280, 98240, 101600, 122800, 130048, 155956, 157184, 162560, 194945, 196480, 203200, 245600, 311912, 314368, 325120, 389890, 392960, 406400, 491200, 623824, 650240, 779780, 785920, 812800, 974725, 982400, 1247648, 1559560, 1571840, 1625600, 1949450, 1964800, 2495296, 3119120, 3251200, 3898900, 3929600, 4990592, 6238240, 7797800, 7859200, 9981184, 12476480, 15595600, 19962368, 24952960, 31191200, 39924736, 49905920, 62382400, 99811840, 124764800, 199623680, 249529600, 499059200, 998118400]

約数ペア:

[(1, 998118400), (2, 499059200), (4, 249529600), (5, 199623680), (8, 124764800), (10, 99811840), (16, 62382400), (20, 49905920), (25, 39924736), (32, 31191200), (40, 24952960), (50, 19962368), (64, 15595600), (80, 12476480), (100, 9981184), (127, 7859200), (128, 7797800), (160, 6238240), (200, 4990592), (254, 3929600), (256, 3898900), (307, 3251200), (320, 3119120), (400, 2495296), (508, 1964800), (512, 1949450), (614, 1625600), (635, 1571840), (640, 1559560), (800, 1247648), (1016, 982400), (1024, 974725), (1228, 812800), (1270, 785920), (1280, 779780), (1535, 650240), (1600, 623824), (2032, 491200), (2456, 406400), (2540, 392960), (2560, 389890), (3070, 325120), (3175, 314368), (3200, 311912), (4064, 245600), (4912, 203200), (5080, 196480), (5120, 194945), (6140, 162560), (6350, 157184), (6400, 155956), (7675, 130048), (8128, 122800), (9824, 101600), (10160, 98240), (12280, 81280), (12700, 78592), (12800, 77978), (15350, 65024), (16256, 61400), (19648, 50800), (20320, 49120), (24560, 40640), (25400, 39296), (25600, 38989), (30700, 32512)]