20123220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25799}}^1$

素因数の和:25824

約数の個数: 48

約数和(自身を含む): 60681600

約数和(自身を除く): 40558380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25799, 51598, 77397, 103196, 128995, 154794, 257990, 309588, 335387, 386985, 515980, 670774, 773970, 1006161, 1341548, 1547940, 1676935, 2012322, 3353870, 4024644, 5030805, 6707740, 10061610, 20123220]

約数ペア:

[(1, 20123220), (2, 10061610), (3, 6707740), (4, 5030805), (5, 4024644), (6, 3353870), (10, 2012322), (12, 1676935), (13, 1547940), (15, 1341548), (20, 1006161), (26, 773970), (30, 670774), (39, 515980), (52, 386985), (60, 335387), (65, 309588), (78, 257990), (130, 154794), (156, 128995), (195, 103196), (260, 77397), (390, 51598), (780, 25799)]