2979860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 6874896

約数和(自身を除く): 3895036

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 157, 260, 292, 314, 365, 628, 730, 785, 949, 1460, 1570, 1898, 2041, 3140, 3796, 4082, 4745, 8164, 9490, 10205, 11461, 18980, 20410, 22922, 40820, 45844, 57305, 114610, 148993, 229220, 297986, 595972, 744965, 1489930, 2979860]

約数ペア:

[(1, 2979860), (2, 1489930), (4, 744965), (5, 595972), (10, 297986), (13, 229220), (20, 148993), (26, 114610), (52, 57305), (65, 45844), (73, 40820), (130, 22922), (146, 20410), (157, 18980), (260, 11461), (292, 10205), (314, 9490), (365, 8164), (628, 4745), (730, 4082), (785, 3796), (949, 3140), (1460, 2041), (1570, 1898)]