1291243990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{158047}}^1$

素因数の和:158116

約数の個数: 32

約数和(自身を含む): 2503480320

約数和(自身を除く): 1212236330

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 4085, 8170, 158047, 316094, 790235, 1580470, 3002893, 6005786, 6796021, 13592042, 15014465, 30028930, 33980105, 67960210, 129124399, 258248798, 645621995, 1291243990]

約数ペア:

[(1, 1291243990), (2, 645621995), (5, 258248798), (10, 129124399), (19, 67960210), (38, 33980105), (43, 30028930), (86, 15014465), (95, 13592042), (190, 6796021), (215, 6005786), (430, 3002893), (817, 1580470), (1634, 790235), (4085, 316094), (8170, 158047)]