199989779840

素因数分解:

$2^7\times 5^1\times {\mathrm{312484031}}^1$

素因数の和:312484050

約数の個数: 32

約数和(自身を含む): 478100568960

約数和(自身を除く): 278110789120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 312484031, 624968062, 1249936124, 1562420155, 2499872248, 3124840310, 4999744496, 6249680620, 9999488992, 12499361240, 19998977984, 24998722480, 39997955968, 49997444960, 99994889920, 199989779840]

約数ペア:

[(1, 199989779840), (2, 99994889920), (4, 49997444960), (5, 39997955968), (8, 24998722480), (10, 19998977984), (16, 12499361240), (20, 9999488992), (32, 6249680620), (40, 4999744496), (64, 3124840310), (80, 2499872248), (128, 1562420155), (160, 1249936124), (320, 624968062), (640, 312484031)]