128649160

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{467}}^1$

素因数の和:646

約数の個数: 64

約数和(自身を含む): 297198720

約数和(自身を除く): 168549560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 97, 142, 194, 284, 355, 388, 467, 485, 568, 710, 776, 934, 970, 1420, 1868, 1940, 2335, 2840, 3736, 3880, 4670, 6887, 9340, 13774, 18680, 27548, 33157, 34435, 45299, 55096, 66314, 68870, 90598, 132628, 137740, 165785, 181196, 226495, 265256, 275480, 331570, 362392, 452990, 663140, 905980, 1326280, 1811960, 3216229, 6432458, 12864916, 16081145, 25729832, 32162290, 64324580, 128649160]

約数ペア:

[(1, 128649160), (2, 64324580), (4, 32162290), (5, 25729832), (8, 16081145), (10, 12864916), (20, 6432458), (40, 3216229), (71, 1811960), (97, 1326280), (142, 905980), (194, 663140), (284, 452990), (355, 362392), (388, 331570), (467, 275480), (485, 265256), (568, 226495), (710, 181196), (776, 165785), (934, 137740), (970, 132628), (1420, 90598), (1868, 68870), (1940, 66314), (2335, 55096), (2840, 45299), (3736, 34435), (3880, 33157), (4670, 27548), (6887, 18680), (9340, 13774)]