278847140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97499}}^1$

素因数の和:97532

約数の個数: 48

約数和(自身を含む): 687960000

約数和(自身を除く): 409112860

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 97499, 194998, 389996, 487495, 974990, 1072489, 1267487, 1949980, 2144978, 2534974, 4289956, 5069948, 5362445, 6337435, 10724890, 12674870, 13942357, 21449780, 25349740, 27884714, 55769428, 69711785, 139423570, 278847140]

約数ペア:

[(1, 278847140), (2, 139423570), (4, 69711785), (5, 55769428), (10, 27884714), (11, 25349740), (13, 21449780), (20, 13942357), (22, 12674870), (26, 10724890), (44, 6337435), (52, 5362445), (55, 5069948), (65, 4289956), (110, 2534974), (130, 2144978), (143, 1949980), (220, 1267487), (260, 1072489), (286, 974990), (572, 487495), (715, 389996), (1430, 194998), (2860, 97499)]