28279140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{733}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 79412928

約数和(自身を除く): 51133788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 643, 733, 1286, 1466, 1929, 2199, 2572, 2932, 3215, 3665, 3858, 4398, 6430, 7330, 7716, 8796, 9645, 10995, 12860, 14660, 19290, 21990, 38580, 43980, 471319, 942638, 1413957, 1885276, 2356595, 2827914, 4713190, 5655828, 7069785, 9426380, 14139570, 28279140]

約数ペア:

[(1, 28279140), (2, 14139570), (3, 9426380), (4, 7069785), (5, 5655828), (6, 4713190), (10, 2827914), (12, 2356595), (15, 1885276), (20, 1413957), (30, 942638), (60, 471319), (643, 43980), (733, 38580), (1286, 21990), (1466, 19290), (1929, 14660), (2199, 12860), (2572, 10995), (2932, 9645), (3215, 8796), (3665, 7716), (3858, 7330), (4398, 6430)]