388615990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{28181}}^1$

素因数の和:28392

約数の個数: 32

約数和(自身を含む): 803525184

約数和(自身を除く): 414909194

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 197, 394, 985, 1379, 1970, 2758, 6895, 13790, 28181, 56362, 140905, 197267, 281810, 394534, 986335, 1972670, 5551657, 11103314, 27758285, 38861599, 55516570, 77723198, 194307995, 388615990]

約数ペア:

[(1, 388615990), (2, 194307995), (5, 77723198), (7, 55516570), (10, 38861599), (14, 27758285), (35, 11103314), (70, 5551657), (197, 1972670), (394, 986335), (985, 394534), (1379, 281810), (1970, 197267), (2758, 140905), (6895, 56362), (13790, 28181)]