21076470

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{311}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 56609280

約数和(自身を除く): 35532810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 251, 270, 311, 502, 622, 753, 933, 1255, 1506, 1555, 1866, 2259, 2510, 2799, 3110, 3765, 4518, 4665, 5598, 6777, 7530, 8397, 9330, 11295, 13554, 13995, 16794, 22590, 27990, 33885, 41985, 67770, 78061, 83970, 156122, 234183, 390305, 468366, 702549, 780610, 1170915, 1405098, 2107647, 2341830, 3512745, 4215294, 7025490, 10538235, 21076470]

約数ペア:

[(1, 21076470), (2, 10538235), (3, 7025490), (5, 4215294), (6, 3512745), (9, 2341830), (10, 2107647), (15, 1405098), (18, 1170915), (27, 780610), (30, 702549), (45, 468366), (54, 390305), (90, 234183), (135, 156122), (251, 83970), (270, 78061), (311, 67770), (502, 41985), (622, 33885), (753, 27990), (933, 22590), (1255, 16794), (1506, 13995), (1555, 13554), (1866, 11295), (2259, 9330), (2510, 8397), (2799, 7530), (3110, 6777), (3765, 5598), (4518, 4665)]