20121140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5953}}^1$

素因数の和:5988

約数の個数: 36

約数和(自身を含む): 45762444

約数和(自身を除く): 25641304

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5953, 11906, 23812, 29765, 59530, 77389, 119060, 154778, 309556, 386945, 773890, 1006057, 1547780, 2012114, 4024228, 5030285, 10060570, 20121140]

約数ペア:

[(1, 20121140), (2, 10060570), (4, 5030285), (5, 4024228), (10, 2012114), (13, 1547780), (20, 1006057), (26, 773890), (52, 386945), (65, 309556), (130, 154778), (169, 119060), (260, 77389), (338, 59530), (676, 29765), (845, 23812), (1690, 11906), (3380, 5953)]