19971200

素因数分解:

$2^7\times 5^2\times {\mathrm{79}}^2$

素因数の和:182

約数の個数: 72

約数和(自身を含む): 49967505

約数和(自身を除く): 29996305

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 128, 158, 160, 200, 316, 320, 395, 400, 632, 640, 790, 800, 1264, 1580, 1600, 1975, 2528, 3160, 3200, 3950, 5056, 6241, 6320, 7900, 10112, 12482, 12640, 15800, 24964, 25280, 31205, 31600, 49928, 50560, 62410, 63200, 99856, 124820, 126400, 156025, 199712, 249640, 252800, 312050, 399424, 499280, 624100, 798848, 998560, 1248200, 1997120, 2496400, 3994240, 4992800, 9985600, 19971200]

約数ペア:

[(1, 19971200), (2, 9985600), (4, 4992800), (5, 3994240), (8, 2496400), (10, 1997120), (16, 1248200), (20, 998560), (25, 798848), (32, 624100), (40, 499280), (50, 399424), (64, 312050), (79, 252800), (80, 249640), (100, 199712), (128, 156025), (158, 126400), (160, 124820), (200, 99856), (316, 63200), (320, 62410), (395, 50560), (400, 49928), (632, 31600), (640, 31205), (790, 25280), (800, 24964), (1264, 15800), (1580, 12640), (1600, 12482), (1975, 10112), (2528, 7900), (3160, 6320), (3200, 6241), (3950, 5056)]