18924975

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^2\times {\mathrm{53}}^1$

素因数の和:118

約数の個数: 72

約数和(自身を含む): 37028880

約数和(自身を除く): 18103905

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 53, 69, 75, 115, 135, 159, 207, 225, 265, 345, 477, 529, 575, 621, 675, 795, 1035, 1219, 1325, 1431, 1587, 1725, 2385, 2645, 3105, 3657, 3975, 4761, 5175, 6095, 7155, 7935, 10971, 11925, 13225, 14283, 15525, 18285, 23805, 28037, 30475, 32913, 35775, 39675, 54855, 71415, 84111, 91425, 119025, 140185, 164565, 252333, 274275, 357075, 420555, 700925, 756999, 822825, 1261665, 2102775, 3784995, 6308325, 18924975]

約数ペア:

[(1, 18924975), (3, 6308325), (5, 3784995), (9, 2102775), (15, 1261665), (23, 822825), (25, 756999), (27, 700925), (45, 420555), (53, 357075), (69, 274275), (75, 252333), (115, 164565), (135, 140185), (159, 119025), (207, 91425), (225, 84111), (265, 71415), (345, 54855), (477, 39675), (529, 35775), (575, 32913), (621, 30475), (675, 28037), (795, 23805), (1035, 18285), (1219, 15525), (1325, 14283), (1431, 13225), (1587, 11925), (1725, 10971), (2385, 7935), (2645, 7155), (3105, 6095), (3657, 5175), (3975, 4761)]