81931600

素因数分解:

$2^4\times 5^2\times {\mathrm{257}}^1\times {\mathrm{797}}^1$

素因数の和:1072

約数の個数: 60

約数和(自身を含む): 197854524

約数和(自身を除く): 115922924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 257, 400, 514, 797, 1028, 1285, 1594, 2056, 2570, 3188, 3985, 4112, 5140, 6376, 6425, 7970, 10280, 12752, 12850, 15940, 19925, 20560, 25700, 31880, 39850, 51400, 63760, 79700, 102800, 159400, 204829, 318800, 409658, 819316, 1024145, 1638632, 2048290, 3277264, 4096580, 5120725, 8193160, 10241450, 16386320, 20482900, 40965800, 81931600]

約数ペア:

[(1, 81931600), (2, 40965800), (4, 20482900), (5, 16386320), (8, 10241450), (10, 8193160), (16, 5120725), (20, 4096580), (25, 3277264), (40, 2048290), (50, 1638632), (80, 1024145), (100, 819316), (200, 409658), (257, 318800), (400, 204829), (514, 159400), (797, 102800), (1028, 79700), (1285, 63760), (1594, 51400), (2056, 39850), (2570, 31880), (3188, 25700), (3985, 20560), (4112, 19925), (5140, 15940), (6376, 12850), (6425, 12752), (7970, 10280)]