20988006

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{11699}}^1$

素因数の和:11740

約数の個数: 32

約数和(自身を含む): 47174400

約数和(自身を除く): 26186394

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 138, 299, 598, 897, 1794, 11699, 23398, 35097, 70194, 152087, 269077, 304174, 456261, 538154, 807231, 912522, 1614462, 3498001, 6996002, 10494003, 20988006]

約数ペア:

[(1, 20988006), (2, 10494003), (3, 6996002), (6, 3498001), (13, 1614462), (23, 912522), (26, 807231), (39, 538154), (46, 456261), (69, 304174), (78, 269077), (138, 152087), (299, 70194), (598, 35097), (897, 23398), (1794, 11699)]