21310180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{269}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 47764080

約数和(自身を除く): 26453900

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 233, 269, 340, 466, 538, 932, 1076, 1165, 1345, 2330, 2690, 3961, 4573, 4660, 5380, 7922, 9146, 15844, 18292, 19805, 22865, 39610, 45730, 62677, 79220, 91460, 125354, 250708, 313385, 626770, 1065509, 1253540, 2131018, 4262036, 5327545, 10655090, 21310180]

約数ペア:

[(1, 21310180), (2, 10655090), (4, 5327545), (5, 4262036), (10, 2131018), (17, 1253540), (20, 1065509), (34, 626770), (68, 313385), (85, 250708), (170, 125354), (233, 91460), (269, 79220), (340, 62677), (466, 45730), (538, 39610), (932, 22865), (1076, 19805), (1165, 18292), (1345, 15844), (2330, 9146), (2690, 7922), (3961, 5380), (4573, 4660)]