128857240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3943}}^1$

素因数の和:4016

約数の個数: 64

約数和(自身を含む): 312364800

約数和(自身を除く): 183507560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 3268, 3943, 4085, 6536, 7886, 8170, 15772, 16340, 19715, 31544, 32680, 39430, 74917, 78860, 149834, 157720, 169549, 299668, 339098, 374585, 599336, 678196, 749170, 847745, 1356392, 1498340, 1695490, 2996680, 3221431, 3390980, 6442862, 6781960, 12885724, 16107155, 25771448, 32214310, 64428620, 128857240]

約数ペア:

[(1, 128857240), (2, 64428620), (4, 32214310), (5, 25771448), (8, 16107155), (10, 12885724), (19, 6781960), (20, 6442862), (38, 3390980), (40, 3221431), (43, 2996680), (76, 1695490), (86, 1498340), (95, 1356392), (152, 847745), (172, 749170), (190, 678196), (215, 599336), (344, 374585), (380, 339098), (430, 299668), (760, 169549), (817, 157720), (860, 149834), (1634, 78860), (1720, 74917), (3268, 39430), (3943, 32680), (4085, 31544), (6536, 19715), (7886, 16340), (8170, 15772)]