17954020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{499}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 43344000

約数和(自身を除く): 25389980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 499, 514, 998, 1028, 1285, 1799, 1996, 2495, 2570, 3493, 3598, 4990, 5140, 6986, 7196, 8995, 9980, 13972, 17465, 17990, 34930, 35980, 69860, 128243, 256486, 512972, 641215, 897701, 1282430, 1795402, 2564860, 3590804, 4488505, 8977010, 17954020]

約数ペア:

[(1, 17954020), (2, 8977010), (4, 4488505), (5, 3590804), (7, 2564860), (10, 1795402), (14, 1282430), (20, 897701), (28, 641215), (35, 512972), (70, 256486), (140, 128243), (257, 69860), (499, 35980), (514, 34930), (998, 17990), (1028, 17465), (1285, 13972), (1799, 9980), (1996, 8995), (2495, 7196), (2570, 6986), (3493, 5140), (3598, 4990)]