7727780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 16907520

約数和(自身を除く): 9179740

約数列:

[1, 2, 4, 5, 10, 20, 67, 73, 79, 134, 146, 158, 268, 292, 316, 335, 365, 395, 670, 730, 790, 1340, 1460, 1580, 4891, 5293, 5767, 9782, 10586, 11534, 19564, 21172, 23068, 24455, 26465, 28835, 48910, 52930, 57670, 97820, 105860, 115340, 386389, 772778, 1545556, 1931945, 3863890, 7727780]

約数ペア:

[(1, 7727780), (2, 3863890), (4, 1931945), (5, 1545556), (10, 772778), (20, 386389), (67, 115340), (73, 105860), (79, 97820), (134, 57670), (146, 52930), (158, 48910), (268, 28835), (292, 26465), (316, 24455), (335, 23068), (365, 21172), (395, 19564), (670, 11534), (730, 10586), (790, 9782), (1340, 5767), (1460, 5293), (1580, 4891)]