20564700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5273}}^1$

素因数の和:5303

約数の個数: 72

約数和(自身を含む): 64089648

約数和(自身を除く): 43524948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5273, 10546, 15819, 21092, 26365, 31638, 52730, 63276, 68549, 79095, 105460, 131825, 137098, 158190, 205647, 263650, 274196, 316380, 342745, 395475, 411294, 527300, 685490, 790950, 822588, 1028235, 1370980, 1581900, 1713725, 2056470, 3427450, 4112940, 5141175, 6854900, 10282350, 20564700]

約数ペア:

[(1, 20564700), (2, 10282350), (3, 6854900), (4, 5141175), (5, 4112940), (6, 3427450), (10, 2056470), (12, 1713725), (13, 1581900), (15, 1370980), (20, 1028235), (25, 822588), (26, 790950), (30, 685490), (39, 527300), (50, 411294), (52, 395475), (60, 342745), (65, 316380), (75, 274196), (78, 263650), (100, 205647), (130, 158190), (150, 137098), (156, 131825), (195, 105460), (260, 79095), (300, 68549), (325, 63276), (390, 52730), (650, 31638), (780, 26365), (975, 21092), (1300, 15819), (1950, 10546), (3900, 5273)]