205669980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1777}}^1$

素因数の和:2435

約数の個数: 72

約数和(自身を含む): 625187472

約数和(自身を除く): 419517492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 643, 1286, 1777, 1929, 2572, 3215, 3554, 3858, 5331, 5787, 6430, 7108, 7716, 8885, 9645, 10662, 11574, 12860, 15993, 17770, 19290, 21324, 23148, 26655, 28935, 31986, 35540, 38580, 53310, 57870, 63972, 79965, 106620, 115740, 159930, 319860, 1142611, 2285222, 3427833, 4570444, 5713055, 6855666, 10283499, 11426110, 13711332, 17139165, 20566998, 22852220, 34278330, 41133996, 51417495, 68556660, 102834990, 205669980]

約数ペア:

[(1, 205669980), (2, 102834990), (3, 68556660), (4, 51417495), (5, 41133996), (6, 34278330), (9, 22852220), (10, 20566998), (12, 17139165), (15, 13711332), (18, 11426110), (20, 10283499), (30, 6855666), (36, 5713055), (45, 4570444), (60, 3427833), (90, 2285222), (180, 1142611), (643, 319860), (1286, 159930), (1777, 115740), (1929, 106620), (2572, 79965), (3215, 63972), (3554, 57870), (3858, 53310), (5331, 38580), (5787, 35540), (6430, 31986), (7108, 28935), (7716, 26655), (8885, 23148), (9645, 21324), (10662, 19290), (11574, 17770), (12860, 15993)]