28716831

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 49768992

約数和(自身を除く): 21052161

約数列:

[1, 3, 9, 11, 13, 33, 39, 53, 99, 117, 143, 159, 421, 429, 477, 583, 689, 1263, 1287, 1749, 2067, 3789, 4631, 5247, 5473, 6201, 7579, 13893, 16419, 22313, 22737, 41679, 49257, 60203, 66939, 68211, 180609, 200817, 245443, 290069, 541827, 736329, 870207, 2208987, 2610621, 3190759, 9572277, 28716831]

約数ペア:

[(1, 28716831), (3, 9572277), (9, 3190759), (11, 2610621), (13, 2208987), (33, 870207), (39, 736329), (53, 541827), (99, 290069), (117, 245443), (143, 200817), (159, 180609), (421, 68211), (429, 66939), (477, 60203), (583, 49257), (689, 41679), (1263, 22737), (1287, 22313), (1749, 16419), (2067, 13893), (3789, 7579), (4631, 6201), (5247, 5473)]