399176240

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:630

約数の個数: 80

約数和(自身を含む): 947082240

約数和(自身を除く): 547906000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 127, 202, 254, 389, 404, 505, 508, 635, 778, 808, 1010, 1016, 1270, 1556, 1616, 1945, 2020, 2032, 2540, 3112, 3890, 4040, 5080, 6224, 7780, 8080, 10160, 12827, 15560, 25654, 31120, 39289, 49403, 51308, 64135, 78578, 98806, 102616, 128270, 157156, 196445, 197612, 205232, 247015, 256540, 314312, 392890, 395224, 494030, 513080, 628624, 785780, 790448, 988060, 1026160, 1571560, 1976120, 3143120, 3952240, 4989703, 9979406, 19958812, 24948515, 39917624, 49897030, 79835248, 99794060, 199588120, 399176240]

約数ペア:

[(1, 399176240), (2, 199588120), (4, 99794060), (5, 79835248), (8, 49897030), (10, 39917624), (16, 24948515), (20, 19958812), (40, 9979406), (80, 4989703), (101, 3952240), (127, 3143120), (202, 1976120), (254, 1571560), (389, 1026160), (404, 988060), (505, 790448), (508, 785780), (635, 628624), (778, 513080), (808, 494030), (1010, 395224), (1016, 392890), (1270, 314312), (1556, 256540), (1616, 247015), (1945, 205232), (2020, 197612), (2032, 196445), (2540, 157156), (3112, 128270), (3890, 102616), (4040, 98806), (5080, 78578), (6224, 64135), (7780, 51308), (8080, 49403), (10160, 39289), (12827, 31120), (15560, 25654)]