20347504

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{313}}^1$

素因数の和:577

約数の個数: 40

約数和(自身を含む): 42050880

約数和(自身を除く): 21703376

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 239, 272, 313, 478, 626, 956, 1252, 1912, 2504, 3824, 4063, 5008, 5321, 8126, 10642, 16252, 21284, 32504, 42568, 65008, 74807, 85136, 149614, 299228, 598456, 1196912, 1271719, 2543438, 5086876, 10173752, 20347504]

約数ペア:

[(1, 20347504), (2, 10173752), (4, 5086876), (8, 2543438), (16, 1271719), (17, 1196912), (34, 598456), (68, 299228), (136, 149614), (239, 85136), (272, 74807), (313, 65008), (478, 42568), (626, 32504), (956, 21284), (1252, 16252), (1912, 10642), (2504, 8126), (3824, 5321), (4063, 5008)]